Bradley Cooper was seen getting hot and heavy with his girlfriend Suki Waterhouse on the set of his upcoming film "American Sniper" in Malibu on Wednesday. The duo was seen in a hot and heavy make out session and as per E! reports the two couldn't keep their hands off each other and were busy hugging and kissing.

Cooper was seen in a camouflage dress while Waterhouse was dressed in flower printed full sleeves jumper and black hoodie sweater.

Cooper was spotted in another sexy outfit. The Oscar winning actor was seen tight white T-shirt, black combat boots and tube socks. According to the Web site, he gave sneak peak of his bum while roaming around on the set.

Waterhouse and Cooper started dating each other in March 2013. However, the couple has never come out officially with their relationship.

Waterhouse opened up about her relationship to Cooper in an interview with Elle UK.

"I'm not one of those girls who goes on about their boyfriends. I do think whatever I say will sound weird. But the truth is, if it start talking about him, I probably won't be able to stop. And I don't really want to talk about him, you know?" said the 21-year-old model.

Waterhouse and Cooper has been spotted on romantic dates in Paris, during a tennis match at Wimbledon and sightseeing in Boston.

The couple has 18 years age difference, but it seems that does not bother them and Waterhouse has got use to all the criticism which has come her way since she got into a relationship with Cooper.

"I try not to look at that stuff. In reality, if there are 200 people commenting on something online, it's less than a grain of salt in a huge beach of humanity-who cares? I just want to work hard, do stuff of the best possible quality and be a great friend (And of course, great girlfriend.)," Waterhouse told the magazine.