I'm kinda friends with one ex & that's because when we dated we didn't really date. He was still in school and I was working. We never saw each other & never really did anything beyond making out 2 or 3 times in the relationship because our schedules didn't allow a lot of time together. Though, we fight so much more now that we hardly talk to each other.
My other ex, well to say I hope he rots in hell about covers it. Fucker cheated on me TWICE. Stupid me I didn't learn from when we dated for all of 2 weeks in high school, because 4 years later we were together again. Hell even engaged. 6 months later he ended the engagement because & I quote "I don't want us to end up like my Uncle and his wife." Who are getting a divorce because they don't get along anymore. Okay, I guess I could see that, except that I wasn't the one in our relationship pushing for kids. Then a week after I blew an entire paycheck on going to see him, he broke up with me because & again I quote "I have to do things the hard way." He figured the whole "let someone go & if they come back they really love you" theory was going to work on this. Too bad I figured out that his baby mama is some skank he was cheating on me with.
I tried to be his friend because once upon a time he was my first love & I wanted to spend the rest of my life with him. However, the lies & acting like a 5 year old child was just too much for me to deal with. Then last week he started emailing me from a fake myspace to "apologize" for acting like a child. Yeah, I would believe it & I would have forgiven him if he didn't tell me who he was via a fucking riddle & trying to give me a guilt trip because I was honest with him about how I felt. I do have to say that I hope he does grow up & starts acting like a man because his son deserves that.
Some people say that it's possible to be friends with an ex.... maybe. If you can then awesome. I just feel that, just based off my experience, the whole "they are your ex for a reason" means that being friends is probably not such a great idea. But that could just be me.