I'm looking for a manga where a girl is looking fo a serious boyfriend. One day she meets a guy and they got along pretty well but it turns out that this guy already has another girlfriend. So she is comforted by her friends, especially his long-time guy friend. There's this flash back that she used to go out with her long-time guy friend back in middle school but she ended up sleeping with a senpai so they kind of broke up. The guy becomes a play boy in high school and they meet again. The girl greets him as if nothing happened and for some reason he ended up helping her get over her present boyfriend. Fast forward to college days, the girl ends up dating a lot of guys in search of a serious boyfriend and the guy also dates a lot of girls. One day, the girl realizes that she really loves her long-time guy friend and decides to confess to him. The guy turns her down because he doesn't believe the girl. After some complicated turn of events (the girl gets kidnapped), they end up together. Sorry I really can't remember the title.. So if you guys could help that would be great!!!

I freaking know that!
Yogoreteru Hima Nanka Nai
This right?