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Colby Agostinelli, LMFT, CST


Accepting new relational clients (couples, polycules, families) for in person sessions, please reach out if you are interested in working together!  

Who I Am

Knowing the importance of the therapeutic relationship also means knowing the importance of what you, whether therapist, facilitator, or supervisor, bring to the space, and what you don't. I am white, non-binary, queer, non monogamous, kinky, neurodivergent, and a sex worker.

Outside of my time doing therapy, supervising, and training, I enjoy dancing and performing, gardening, home projects, reading (or trying to), traveling, making spreadsheets, and hanging out with my two senior dogs - a foxhound & a Cattle Dog.​ I'm equally passionate about sexual freedom, challenging oppressive systems, and queering up the world around me in and out of my role as a therapist.

Therapy with Me

I believe we show up best when we have strong, empowered relationships with ourselves and others and therapy is no exception. I lean towards a casual, relational yet assertive and steady presence and will challenge you while holding a warm and encouraging space for you to explore and process. You can expect me to make you laugh, curse, and be very human and honest with you in session. I might even be sarcastic or reference something I learned from TikTok. 


My training is rooted in systemic, queer, feminist theory which allows me to critically examine the various systems we all exist within rather than focus on any particular symptom or issue. I am a huge family therapy nerd and feel most influenced by systemic models such as Experiential, Structural, Bowen, and Internal Family Systems. 


I truly enjoy working with folks from all walks of life, but especially with couples and families who may be seen as "non traditional." I'm excited to help you navigate, process, and better understand yourself, your partner, your role in relationship to others, and to help you tap into something deeper and more fulfilling. 

Clinical Trainings & Consultation

As an AAMFT Approved Supervisor, I am deeply passionate about training, mentorship, and supervision. I am currently only able to offer ongoing supervision to PCST staff but I do have regular availability for clinical consultations both one-off and ongoing. I wholeheartedly support therapists who are willing to seek consultation to improve their skills/knowledge to be able to maintain their existing client relationships and am honored to support this process.  

Additionally, I offer individualized workshops for groups of therapists and other clinical disciplines looking to expand their skills and knowledge on the following topics. 

- Couples Therapy

- Sex Therapy

- Kink/BDSM

- Polyamory/Non-Monogamy

- Gender Affirming Care

I work with


Relational partners

Adult Families


Desire Discrepencies

Painful Sex 


Kink & BDSM

Sex Work


$220 (sliding scale spots full)

Current Offerings

Sex Therapy for Couples

Sex Therapy Supervision

Clinical Consultation 

Guest Lectures


Letters for Surgery


Licensed Couples & Family Therapist


AASECT Certified Sex Therapist


AAMFT Approved Clinical Supervisor



Communications Chair, Board of Directors, American Association of Sexuality Educators, Counselors, & Therapists (AASECT)


Adjunct Instructor, Thomas Jefferson University



Master of Family Therapy - Concentration in Sex Therapy, Thomas Jefferson University


Languages spoken


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