AceShowbiz -

Miley Cyrus was pictured with Patrick Schwarzenegger's bikini-clad girl at a USC football game back in November. It was the same game that Miley and Patrick went public with their relationship.

According to TMZ, the bikini-clad girl's name is Natalie and she was with her boyfriend at that time. A source tells E! News of Miley and Natalie, "They've known each other for well over a year. They've definitely hung out before-they're part of the same group of friends. They've hung out a lot."

In related news, Patrick has allegedly flown back home to see Miley. A source tells HollywoodLife, "He is a great kid and felt so bad about these pics that he jumped on the next flight home. I was told they really are great buds and Patrick would never cheat on his girlfriend. The group they are with all felt so bad that these pics were taken. This is a group of guys and girls who all met in the dorm. No intimate relations just buds."

"Patrick really is a great kid and friend," the source adds, "He really is just one of the gang. He does bring Miley around and all the group really thinks she is sweet.I know people love to hear the trash but honestly these are just two kids who really like each other. Have a great day. It was spring break and they all were just being college kids."

However, InTouch reports that Miley is fuming about the cheating rumors. "Miley had never trusted this chick," an insider tells the site, "She's furious right now and isn't listening to his excuses. Patrick may have blown this. Miley was so angry when she saw the pictures, especially when she realized that the girl is someone she knows and has hung out with."

Following the cheating rumors, Patrick's sister Katherine defended him on Twitter, writing, "A lot of you guys spreading hate need Jesus in your lives ASAP."