So there are two guys?

There are two guys. One I used to date and one that I really want to date now. The one I went out with before was the most amazing guy ever. He made me feel wanted for the first time, and I seriously miss him even though we're still best friends. He told me I was the most amazing girl ever, and that means a lot to me. But then, he just told me he felt confused because he liked a few other girls and he broke it off. I was really upset, and the other guy (another good friend) was sympathetic. A few days later, he brought up relationships and I totally freaked because I was so upset. I said that they should be banished and I didn't care if I never had another one again. It turns out, he was going to ask me out. So I basically turned down a really great guy without ever trying. Now tonight I really really want to be with him, and I'm upset because my ex just told me how he had a one night stand with another girl and he doesn't even know her name. Who tells that to their recent ex gf? Wsid?