SOLVED. Help, book with male twins! [s]

[Gabriella]

Okay so I'm looking for a book that I read a couple years ago about a girl who is dating this guy for a while, and she notices that one week he'll be really sweet and then the next he'll be more distant. Basically by the end of the book she discovers that she was dating two different guys the whole time, but she didn't know because the guys were twins. It's a romance, obviously, and I know that it's more of an adult book. Help would be appreciated, thank you.

[Ayshe]

Dance for Me maybe?

[Gabriella]

Thank you so much, Ayshe! I've been looking for this book for months and thanks to you I found it.