Did Miley Cyrus and Patrick Schwarzenegger Break Up?

Miley Cyrus and Patrick Schwarzenegger are no Camelot couple, y'all.
Rumors of relationship troubles first started last month when Patrick was spotted getting cozy with a female friend on spring break in Cabo San Lucas. Miley's man insisted nothing inappropriate went down, pointing out that the co-ed in question was the girlfriend of one of his best friends. This allegedly innocent paparazzi-captured PDA alone wasn't enough to break up Miley and Patrick, but it didn't exactly bolster trust between the twosome either. Actually, as one source told E! News, the "Cabo thing" caused a huge rift in their relationship. Patrick was "so embarrassed and knows he screwed up," added a source. "He doesn't even know what to do with himself and just wants to hide from the world."