Taylor Swift cheats on Conor Kennedy?

When the 22-year-old 'Love Story' hitmaker first started dating Conor, it was thought that she was dating Patrick instead.

Now that it is known that Swift is dating Conor, 18, pictures of her and Scwarzenegger have emerged showing their display of affection, reported Radar online.

"Taylor was making out with Patrick all night at a family event she attended with Conor. The previous day, she was all over Conor, so she hooked up with two cousins on consecutive nights," a source said.

Although it is not clear where or when the party took place, but it is said that Conor doesn't know but everyone else in the family does about the incident.

Swift's representative has denied these claims.