I have been looking for a manga where it is yaoi. And one of the characters (preferably the uke) is traumatized by something. What he can't do might include(DOESNT have to be all of these but maybe one of these): afraid to love, doesn't want to love, afraid to do it(you know what I assume), some type of phobia(PLZ not haphephobia), or something else that can contribute to The story in more than one way.
Thx!

When life gives you lemons, squish them

I'm not sure any of these are quite what you're looking for, but I figure I'd try:

Haisha Nante Kirai da! Afraid of the dentist.
Hana to Usagi Afraid of being seen.
Ten Count Afraid of germs. The uke does have a dislike of being touched, but it's due to the germ fear (it seems) and not necessarily the action of being touched itself. The fear does seem to stem from a trauma, but the author has only shown us bits and pieces of the uke's past. I really love this one.

Hohoemi no Nichijou Chapter 1 features an uke who was traumatized because of abusive parents, and does seem hesitant to love.

Kaeru no Prince-sama It's been awhile since I've read this, but the uke has an inferiority complex that makes him doubt that he's worth being loved. This might be something you'd like?

Cut
Brother x Brother
Koukyuu no Arika
Zankoku na Kami ga Shihaisuru
Toware no Mi - Story 3

Sunao ni Narenai Otokotachi
Gravitation
Honjitsu wa Seiten nari
Soreha Tabete wa Ikemasen
Kanashii (Itoshii) Kotoba

can only think of these right now

Kiraboshi Dial (fear of small places)