This is not a case of revenge or anything. My ex and I split 3 years ago when he "fell in love" with someone else and forgot to tell me until I found out. We are super good friends now and I am with him all the time (it's not weird, long story) anyway I met his best friend right after we broke up and thought he was attractive but pushed it aside. I've gotten close to him and consider him my friend too. Since its been 3 years, is it okay to peruse him or make my feelings known? Or is that crossing a line?