Thanks to his action star dad and recent PDA-filled association with Miley Cyrus, more people have become quite interested in Patrick Schwarzenegger's girlfriends for the past couple of years.

The 21-year-old hunk previously expressed his crush on the actress and singer in a 2011 interview. Four years later, the couple are already kissing in public and hanging out with each other's friends.

A few months before he started kissing the "Wrecking Ball" singer in football games, however, Arnold Scharzenegger's son had been holding hands with fellow University of South California student, Taylor "Tootsie" Burns. They dated for about a year, going on vacations and supporting each other's activities, before Cyrus entered the model's life.

He also dated Aly Michalka's sister, AJ in 2012. They were seen leaving a Halloween party together seemingly as each other's dates. He was also speculated to have dated Taylor Swift behind his cousin, Conor Kenedy's back.

Browse through the gallery to see Patrick Schwarzenegger's girlfriends list.