I’m tired of the same thing happening

I’ve been trying to get in a serious relationship for a long time. All these guys say how they want the same, even saying “I love you.” POOF! MIA, acting funny, going to other females. Name it, I’ve experienced it. This has been one of the most mentally draining thing I’ve experienced in a long time. I think there’s something wrong with me and no one is telling me. Most of my friends have boyfriends, so majority of the time when I am with them, I third wheel often. I don’t make that part a big. I just think of the nights when I want to be held or those butterflies you would get before seeing someone…. Yea I miss that. I’m tired of these dudes using women for sex. If you just want that, THEN SAY THAT!