Please help me I forgot the name of a manga I have read a long time ago. It was a shoujo/romance/drama manga.The story is like this (I'm not 100% sure) :
The main girl character was in an alley(?) with some bad boys and the main boy character saves her. They actually get together (I think he was her frist love) but the boy's ex-girlfriend comes back and they have still feelings for each other so our main girl decides to break up with him so thet he can get back together with his ex. So basically something like this,

Sorry I'm not so good with english but I hope you have some ideas. If not then some other recommendation would be good to. 🙂

Life Is A Rollercoaster but it isn't funny all the time.To get From the top to the botton takes just 10seconds but it takse 2minutes to get back to the top.It has it's own turning points which can turn your life upside down.So I belive life is like a Rollercoaster...I hope I'm not gonna feel sick in the end but that is a long way away so lets enjoy it for now!!