This guy is a jerk to women and I think that maybe one kills him? Anyway, he's reincarnated as a blonde woman and she goes to his work, etc, and ends up falling in love with his/her best friend... who is a dark haired dude that's in other things but I can't remember who he is. And I think his/her name is charlie?

Sounds like,.

Switch (http://www.imdb.com/title/tt0103016/) (91)

View trailer (http://www.imdb.com/video/screenplay/vi965542169/)
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Thank you thank you thank you thank you!! And now I can remember her name! :)