It seems you’ve done some research.

I would suggest you read more here and look at the Tools section at the top of this page.
It’s got to be devastating to hear those words shortly after thinking you’re planning for a life together. Is your partner in therapy currently?
Unfortunately he is not in therapy

I have tried getting him to go many times. This last time he even asked me to send him some contact information about a therapist I had found, but as far as I know, he never contacted them. A few weeks ago he was actually doing research on different therapists on his own, but nothing ever came of it.