(Cover) - EN Showbiz - Peter Facinelli once pretended he was a real doctor and gave Kristen Stewart medical advice.

The two stars appear alongside each other in the Twilight series of films. Peter's character Carlisle Cullen is a doctor, and he admits Kristen once got fact and fiction muddled when they were on set.

"She spilled something on her belly and a had a little burn so I looked at it for her and I told her to put some kind of salve on it and I was telling how to treat it so that it wouldn't scar or anything. It was funny," he laughed.

Shooting has wrapped on the film franchise now, with the penultimate instalment Breaking Dawn Part 1 hitting screens in November.

Peter has mixed feelings about wrapping the movies. While it's fun to move on to other things, he's going to miss spending time with his on-screen family including Edward Pattinson.

"[I'll miss] where the whole Cullen family is together," he told the American edition of OK! magazine. "I think there is something magical about all of us being dressed up in costumes and doing those scenes. I will miss that because that I know, even if I work with the other actors again, it will be different. There is something really interesting about having all of us together in a room."

Peter remains busy, as he appears in American television show Nurse Jackie. He's warned fans to look out for his character Coop in the new season of the show, as he's undergone a makeover.

"I can tell you that Coop is trying to mature a little bit so I think he will be growing a moustache. I don't know how long it will last, but I can tell you that we will be starting season four with Coop in a moustache. We are bringing back the Tom Selleck a little bit," he giggled. (C) Cover Media