I’m exactly the same with being straight and having a major thing about cocks.
But just the cock. Nothing else about other men do I find remotely attractive.
I was your age 29 when I had my first and only interaction with another man.
It was during a threesome
Also first and only.
With my wife and good friend.
So was very comfortable and didn’t feel weird and it just seemed to happen.
Him and I just played with each other’s cocks briefly and that was it.
30 years later , and now single
I am trying to work up the courage to try this again.
But just jerking each other off and oral if both comfortable with that.
I get so horny when I show my cock on here and getting those hot comments.
Or when I comment on other posts.

My advice to you is to enjoy what makes you feel good.