My Best Friend's Girl is a little bit of a cliche movie where they guy is a handsome seducer, this makes the movie to fall into that average cliche rank.
The story is about the seducer who will get money if he can seduce someone's girlfriend, date her and seduce her.
The story will split when he will find a girl and he will be cold seducer at the beginning but with time he will start to develop some emotions for her and he will fall in love with her.
This makes the story to be even more cliche, but overall it is a very interesting movie and it's a "feel good movie", you should not expect a lot from it, just watch it and enjoy.
[Source](https://www.aceshowbiz.com/images/still/my_best_friend_s_girl13.jpg)