This may sound crazy, but my ex-husband was a "fixer" too. I bought the "Men are from Mars, Women are from Venus" on cassette (yes, it's been about ten years ago) and we listened to it driving on vacation. It really helped for a long time. We split up due to other problems, but he was actually referencing it more than I was, and he has never been in therapy, etc. Just a thought.

It talks about how women just want someone to listen and empathize with their problems, but men want to fix everything. If they cannot fix it, they feel like they are of no good to you.