A guy takes money from guys to patch-up between their girlfriends by dating them and then by breaking up with them in weird ways so that girls go back to their previous boyfriends. Movie starts with his 10 ways to annoy girls so that they would break up with him. But finally finds his love. Then I don't remember... then again to break up his love-girls marriage with another man, there are again 10 ways to act weird so that he would get attention to break her marriage. In #10th act to break, he shows his penis to her grandma.

Mr. Fix It (http://www.imdb.com/title/tt0416051/)?

Its not mr. fix it. I have seen the trailer. Its plot is almost identical. Thanks for trying to help though. :)

My Best Friend's Girl (http://en.wikipedia.org/wiki/My_Best_Friend%27s_Girl_%282008_film%29)

My Best Friend's Girl (http://en.wikipedia.org/wiki/My_Best_Friend%27s_Girl_%282008_film%29)

That's it... a lot of thanks to u..! :-)

You're very welcome.