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Colby Agostinelli, LMFT, CST


I have limited availability for new relational/family clients, in person only. Please email me if you are interested in working together! 

Who I Am

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

Outside of my time doing therapy, I am also active in supervising other clinicians and typically teach one graduate sex therapy course per semester. Outside of work I enjoy going to dance class, performing, interior design, reading (well, trying to), traveling, making spreadsheets, and caring for my houseplants and 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 with others. Therapy is no exception. I lean towards a casual and relational yet assertive and steady presence in sessions. I will challenge you while holding a warm and encouraging space for you to explore and process. You can expect me to make you laugh, to curse, and to be very curious, real, and honest with you.

My training is rooted in systemic, queer, feminist theory which allows me (and us) to critically examine the various systems we all exist within rather than focus on or oversimplify any particular "symptom" or issue. I am a huge family therapy nerd and feel most influenced by systemic models such as Experiential, Structural, Bowenian, and Internal Family Systems. I am also firmly rooted in a fat liberation framework and am consistently working towards decolonization in therapy and beyond.


I truly enjoy working with folks from all walks of life, but especially with couples and families who may be seen as "non traditional" in all formats. 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. 

Supervision & Consultation

As an AAMFT Approved Supervisor, I am deeply passionate about training, mentorship, and supervision. My availability for supervising pre-licensed clinicians is limited but I do have regular availability for clinical consultations and for mentoring those pursuing their AAMFT Approved Supervisor designation. 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.  

If you are interested in consultation regarding starting or improving your private practice, whether solo or group, you can read more about how I work here

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

- Couples

- Poly systems 

- Friends

- Adult Families


Sexual Desire Discrepancy

Identity Exploration

Painful Sex

Polyamory, Kink, & Sex Work

Self Esteem & Boundary Setting


$240 (sliding scale spots full)

Services Offered

Clinical Supervision & Consultation 

Guest Lectures & Workshops

Letters for Surgery (done in 1 session)

Private Practice Coaching

Sex Therapy Group Supervision


Licensed Couples & Family Therapist


AASECT Certified Sex Therapist


AAMFT Approved Clinical Supervisor & Mentor


Current Positions

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


Adjunct Instructor of Sex Therapy, Thomas Jefferson University



Master of Family Therapy with a Concentration in Sex Therapy, Thomas Jefferson University


Languages spoken


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