It's been several years since I (30m) have been with my girlfriend (25f), sexually everything was perfect, she considers me her best partner etc. But for a few weeks now I don't want anyone to touch me, you've had big fights (about lies she told me etc) that have made me completely lose confidence in her, in myself (especially in myself). We have a very active sex life (2-4 times a day), for a few weeks now I've been forcing myself even if I don't feel like it because otherwise she gets upset

I don't know how to explain it, but I don't want anyone to touch me in a sexual way, I don't want anyone to touch my penis, I don't want to see myself naked. I have no self-confidence or self-esteem, just seeing myself naked in the mirror makes me cry, yet I work out, I'm in good shape, I've never been criticized for my size (7inch) but I don't want to see my penis or have anyone touch it, I wish I didn't have one. Just seeing porn or imagining myself sleeping with someone makes me anxious and depressed.

I'm okay with caressing her, making her come with my mouth and fingers, but I'm unable to do more and I don't know how to talk to her about it. For me sex is important but I can do without it (I've already had relationships without sex) but for her sex is 70-80% of the couple and she's already told me if she couldn't be with someone who wouldn't satisfy her sexually. This depresses me even more, I don't know what to do, should I force myself? I don't know how to broach the subject etc. I'm at a loss