Bradley Cooper reunited with old friends at his 20th high school reunion.

The 'Silver Linings Playbook' star, who is dating British model Suki Waterhouse, impressed everyone with his humble attitude as he joined his favourite teachers and old classmates at Germantown Academy in Fort Washington, Pennsylvania, on Friday night (08.11.13) for a celebration for the class of 1993.

A school official told ''He has come back to GA a couple of times to talk to students. He loves seeing his old teachers and enjoys reminiscing with them. When he says he's going to do something for the school, he does it. He's a big supporter and proud to be a part of this school. So it was no surprise that he came to the reunion.''

The 38-year-old actor also caught up with his fellow classmate, 'Bones' star Brian Klugman and they attended the reunion party at MaGerk's Pub & Grill after touring the school's new buildings.

An eyewitness said: ''He was definitely having a great time. He made his rounds and made sure to talk to everyone. He had fun catching up and hearing about their lives. There was lots of laughing and joking going on. He really loved seeing everyone.

''He didn't act like a movie star. Just a normal guy who was personable and friendly.''

The duo also cheered on the school's football team during a game on Saturday (09.11.13), where Bradley took time to meet lots of his younger fans.

A source said: ''He hung out as long as he could at the game. He loved being back at the school. He took his time signing autographs and said hello to a lot of people. He is very modest. I think he has a hard time understanding why people follow him around campus. It's genuine and not a false modesty. He's a really good guy.''