My love life....good lord help us!!!!

So over the past week my love life has completely gone BOOM!! My ex, Jason, asked me on Monday if we could start seeing other people. Now I guess that's fine but it's also a little weird for me seeing as how we were together for a year and he still wants to be friends. Now I'm not at all afraid to admit that hey I'm just a little bit jealous, but it bothers me how calm he is about all this. Now this relationship was far from perfect and honestly I did most of the fucking up, but I did do a lot of good during our time together. There is also this nagging feeling that makes me want to just put a stop to it and try to get him back, but I'm not really sure what to do. I already know some of the nice comments that I'm gonna get about this from a certain two peoples! Anyway I don't really know what to do, it just puts me in this dark place. It also doesn't help that the guy I'm crushing on lives about half a continent away, but that's a story for another time. Leave me some comments or advice or whatever!