Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Email Us

(929) 280-7729 Call Us

Email Us

Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Verified by Psychology Today Verified by Psychology Today

3 Endorsed

Call Us

Let's Connect (929) 280-7729

Available both in-person and online

1239 North Country Road Stony Brook, NY 11790

Website

Couples facing affairs, broken trust, constant fights, poor communication, emotional distance, intimacy struggles, money stress, parenting conflicts, or even divorce often feel lost and painfully alone. Many arrive drained from endless arguments without resolution, nights spent as strangers, silent resentment over finances or daily chores, and the deep ache of feeling unseen and misunderstood. Over time, love can feel replaced by distance, mistrust, and conflict, leaving partners questioning whether repair and closeness are still possible

Our therapy is structured and results-driven. We begin with weekly sessions to stabilize the crisis, move to biweekly as progress builds, and transition to monthly for long-term balance. Every three months we review outcomes together. We offer both in-person and virtual sessions across multiple locations for your convenience.

Before starting therapy, we offer a free 15-minute phone call. This is your chance to ask questions, share what brings you here, and get a sense of how we work. We are an out-of-network practice, and many clients receive full/partial reimbursement by submitting claims directly to their insurance. We encourage you to call your provider to confirm.

Call or Email Cl. Director Demi Kostouros now for a free 15 minute consultation - (929) 280-7729

Practice at a Glance

Available both in-person and online

Be You Psychotherapy, PLLC

1239 North Country Road

Stony Brook, NY 11790 map

(929) 280-7729

Be You Psychotherapy, PLLC

159 New York 25A

Miller Place, NY 11764 map

Website

Weekly, biweekly, monthly, or quarterly sessions available in-person at Stony Brook or virtually. Begin with a free consult call today

I specialize in Marriage Counseling, Infidelity and Communication

$140 Per Session, I accept insurance

I see individuals, couples and families

Because every argument has a story underneath it—and that's where healing begins.

Let's Connect (929) 280-7729

Practice at a Glance

Available both in-person and online

Be You Psychotherapy, PLLC

1239 North Country Road

Stony Brook, NY 11790 map

(929) 280-7729

Be You Psychotherapy, PLLC

159 New York 25A

Miller Place, NY 11764 map

Website

Weekly, biweekly, monthly, or quarterly sessions available in-person at Stony Brook or virtually. Begin with a free consult call today

I specialize in Marriage Counseling, Infidelity and Communication

$140 Per Session, I accept insurance

I see individuals, couples and families

Because every argument has a story underneath it—and that's where healing begins.

Finances

Fees

Individual Sessions $140
Couple Sessions $165

Payment Methods

American Express, Discover, Health Savings Account, Mastercard, Visa

Insurance

1199SEIU
Aetna
Anthem
Blue Cross
Blue Shield
BlueCross and BlueShield
Cigna and Evernorth
EmblemHealth
Empire Blue Cross Blue Shield
Excellus BlueCross BlueShield
Government Employees Health Association (GEHA)
Group Health Incorporated (GHI)
Horizon Blue Cross and Blue Shield
Humana
Magellan
NYSHIP | NY State Empire Plan
Optum
Oxford
UnitedHealthcare UHC | UBH
Out of Network

We are an out-of-network practice. Superbills are provided, and many clients receive full or partial reimbursement depending on their insurance plan. We encourage you to check with your provider about out-of-network mental health coverage. HSA/FSA cards are accepted.

Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Call or Email us for a free 15 minute consultation now - (929) 280-7729

Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Call or Email us for a free 15 minute consultation now - (929) 280-7729

Qualifications

Counselor: Dimitra Kostouros-Gaitaneris

Verified by Psychology Today Licensed by State of New York / 012314 Dimitra Kostouros-Gaitaneris

Additional Credentials

Membership with American Psychological Association

Living across different European countries opened horizons and revealed new ways of seeing the world. This broadened vision brings depth, openness, and creativity into therapy — finding paths forward where others see none.

Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Call or Email us for a free 15 minute consultation now - (929) 280-7729

Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Call or Email us for a free 15 minute consultation now - (929) 280-7729

Specialties and Expertise

Top Specialties

Marriage Counseling
Infidelity
Communication

Expertise

ADHD
Adoption
Cancer
Career Counseling
Codependency
Divorce
Family Conflict
First Responders
Grief
Infertility
Life Coaching
Life Transitions
Marital and Premarital
Men's Issues
Narcissistic Personality (NPD)
Parenting
Pregnancy, Prenatal, Postpartum
Relationship Issues
Sex Therapy
Trauma and PTSD
Veterans
Women's Issues

Couples often seek therapy for communication breakdowns, infidelity, parenting conflict, financial strain, challenges with in-laws, health problems, or major life transitions such as divorce or grief. Our therapy is structured and goal-oriented, beginning weekly to build momentum, shifting to biweekly as progress develops, and moving to monthly sessions for lasting stability.

Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Call or Email us for a free 15 minute consultation now - (929) 280-7729

Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Call or Email us for a free 15 minute consultation now - (929) 280-7729

3 Endorsements

Cl. Director Demi Kostouros

Counselor

Seeing a couple's therapist can benefit any relationship, no matter how strong or complicated it may be, and we have a genuine passion for helping couples thrive. Forget yelling, bickering and welcome conflict resolution and overall a peaceful household.

Jay Corbo

Counselor, MSEd, LMHC

Thank you Demi, I have received similar feedback about your too.

Richard A Scala

Counselor, LMHC, LPC

Demi is a consummate professional who truly cares about her clients. When needing to make a referral, she is one of the first clinicians I think of. Her superior clinical skills and warm therapeutic presence will assist a client in meeting their goals.

Client Focus

Age

Teen ,

Adults ,

Elders (65+)

Participants

Individuals ,

Couples ,

Family

I also speak

French ,

German ,

Greek ,

Italian

Age

Teen ,

Adults ,

Elders (65+)

Participants

Individuals ,

Couples ,

Family

I also speak

French ,

German ,

Greek ,

Italian

Treatment Approach

Types of Therapy

Acceptance and Commitment (ACT)
Attachment-based
Coaching
Cognitive Behavioral (CBT)
Culturally Sensitive
EMDR
Family / Marital
Family Systems
Gestalt
Gottman Method
Imago
Internal Family Systems (IFS)
Parent-Child Interaction (PCIT)
Relational
Solution Focused Brief (SFBT)

Before beginning therapy, we offer a brief complimentary phone call to discuss the reasons that bring you here. This helps us understand your challenges and goals so we can decide on the most effective approach together. One size does not fit all, and we draw from a variety of methods rather than limiting therapy to a single model.

Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Call or Email us for a free 15 minute consultation now - (929) 280-7729

Cl. Director Demi Kostouros

Counselor, Marital, Affair, Fights

Call or Email us for a free 15 minute consultation now - (929) 280-7729

Groups

Communicating with My Partner

Hosted by

Demi Kostouros

Do small disagreements turn into big fights? Many couples feel stuck in cycles of tension, bickering, or silence — often about chores, money, parenting, or feeling unheard. This group brings couples together in a safe space to realize they are not alone. With therapist guidance, partners learn skills for calmer communication, respectful listening, and expressing needs without blame. The group format is unique: you watch, learn, and practice alongside other couples, gaining insights not only from your own relationship but also from the patterns you see in others.

Age

Adults

Session Cost

$80

Group Meets

Every other Fri 7 P.M. - 8 P.M.

Location

Be You Psychotherapy, PLLC

1239 North Country Road

Stony Brook, NY 11790

Email Demi Kostouros about this group or call - (929) 280-7729

Why did I Cheat? / Can I Forgive ?

Hosted by

Demi Kostouros

Ever wondered why people cheat? It isn’t just men — women do too, though it often goes undiscovered. Affairs may be long-term, impulsive, or even emotional without sex, but the pain they cause runs deep. For the one who cheated, questions arise: “Why did I do this? Do I want to stay?” For the betrayed: “Am I enough? Can I ever forgive?” This group offers a safe, therapist-led space to explore the reasons behind infidelity. Sharing stories with others reduces shame, builds understanding, and helps couples consider what healing or moving forward looks like.