I just want to highlight something you said in your last post that seems like a theme here:
I think I need to unlearn that my partner will be fine if I tell them honestly how I feel. If you read similar past posts of mine along with this one, you'll learn that my partner has had some adverse reactions to some of the things I've said or mentioned doing in regards to sex and my sexual desire. So now I feel uncomfortable saying anything or asking for certain things because I don't want them to feel pressured or upset if I ask and then I express disappointment.
If I'm honest, that concerns me. Feeling like you can't share your feelings with your partner can become really toxic to your mental health. I'm glad you're saying that you want to bring it up to your therapist -- I think that's a great idea!
I also want to say that you shouldn't
feel complete hopeless/as if you will never have a sex life that is satisfying to you -- you absolutely deserve a relationship (or relationships, plural) that fulfill your romantic and sexual needs. There are strong matches for your needs out there.
Do you want to tell us a bit more about why and your partner are a match, romantically? It may be helpful to know what is balancing out these differences in your relationship needs.