emillian.....I am going to touch on a subject that no one else has mentioned (thus far)....I don't know if it applies here or not...because there is not enough information......
There is a list of endocrine disfunctions that are a yard long that can have impact on ones sexual function....especially, erectile dysfunction and/or desire....
You mentioned sex therapy....but, you didn't say what kind, how long, what conclusions....
Endocrine disorders require a complete, specific kind of work-up by a specialist. Generally, one can get such a referral by going to a urologist, first...
Generalist physicians aren't equipped to do this....
With the list of other problems that you mentioned--addiction?? eating disorder.....body image issues.... It just goes to say....that he needs to be under the care and support of a psychologist....
(you have not made it clear as to whether he is addicted to or using substances??).
There is help for him....lots of help. It is up to him if he is motivated to get the help he needs or not.....
My concern is you......you have a baby....and, you indicate that you have little support....
Your overriding responsibility is to the baby FIRST. This means that you have to take care of your baby's mother--so that you can give him/her a stable and nurturing environment. If the mother is not happy---the child is going to suffer.....
I suggest that you get a counselor for yourself and a support group (the counselor can help you find the right group).
The main point is---there IS help for the both of you....
IF he is not willing to get help.....your alternative is to remove your star from this wagon and work on your own life......your baby deserves that much......
I hop that you will stay around and read and learn....
I have long observed that those who are willing to get help and support are the ones who tend to get better.....
dandylion