I share what happened to me, so guys that have had that happen to them know it has happened to others.
You are not alone, and if you are still hurting. Please get therapy, it helped me. It isn't about complaining, it is about sharing your pain, and then minimizing it so it doesn't darken your soul.
You are correct, men aren't believed. But neither are women too, so the most important thing we can do as survivors is help women and help stop men that abuse.
I heal, you heal, we help women who are healing and as a community we stand up and say no.
The louder are voices ... the smaller the assaulters become. Trust me, if you met me in person, you would say ... no way. Well shit happens as I say.