The World God Only Knows

Plot in a nutshell.

Keima Katsuragi, a second-year high school student, is an avid dating sim gamer. He is known on the Internet as "The Capturing God" for his legendary skills to be able to "capture" any 2D girl in games. However, in his actual school life, Keima is known as otamegane , a derogatory portmanteau of the two words otaku and megane (glasses).

At the start of the series, Keima receives an e-mail offering him a contract to "capture" girls. He accepts what is thought to be a challenge, and a demon from Hell nicknamed Elsee appears. She asks for his cooperation to help her in catching the runaway spirits. These spirits hide themselves inside the hearts of girls, and Elsee suggests that the only method to force the spirits out is by "capturing" their hearts—making them fall in love with Keima. Appalled by the idea, Keima refuses after clarifying to Elsee that he is only interested in "capturing" 2D girls and that he detests reality. Nevertheless, with the contract already accepted, Keima would have to help Elsee no matter what; if they fail, both Elsee and Keima would lose their heads.

oOoOoO i've heard of this one, might give it a try.
Btw thanks for the help XD

You should definitely give it a try. Its one of the best series I've read. Only complaint is that its updated irregularly.