James McAvoy gives good split-personality villain in Glass (out January 18) and plays a handsome writer in this summer’s It: Chapter Two. Here, our February issue‘s Cosmo Guy talks about romance, awkward sex scenes, and dad jokes.

Spreading the Love

“I’m a fan of ­Valentine’s Day, but I would rather see Valentine’s Day every day. I don’t like feeling like I have to be romantic. I love the idea of buying gifts all through the year or finding another way to make somebody feel special.”

Behind the (Sex) Scenes

“There was a very technical sex scene in Atonement. The director wanted us to kiss with tongue, and Keira Knightley was wearing a dress that was made out of tissue paper, like it would fall apart if I blinked too hard. The scene wasn’t actually sexy at all, but they rarely are.”

Creep Factor

“With Glass, I enjoyed playing all those personalities. Being creepy was ­actually really fun. You don’t often get to do that kind of thing.”

Funny Business

“I have an 8-year-old, so I am fully qualified to dish out the dad jokes. I think I’ve always appreciated a good old-fashioned one. Even when I was 18, I pretty much specialized in dad jokes. I finally grew into the sense of humor I always had.”

This story appears in the February issue of Cosmopolitan, on newsstands now.