Jason DeRulo cheating on Jordin Sparks- Caught going to hotel with Busty Latina

Jason DeRulo and recording artist CARMEN ORTEGA spent the night in the SAME HOTEL. According o a TOP SNITCH, the pair was spotted heading back to Jason's hotel at the W, where a person at the hotel tells us she emerged the next morning.

If the name CARMEN ORTEGA sounds familiar - it's because she's the girl who Kim Kardashian's ex-BF Reggie Bush cheated on her with. Oh, and she was MESSY ABOUT IT too. After Kim tried to make her out to look like a liar - she posted a video ONLINE of her inside Reggie's house.

We wonder what JORDIN SPARKS has to say about this . . .