Robert Pattinson and Kristen Stewart

Robert Pattinson and Kristen Stewart played lovers Edward Cullen and Bella Swan in 'The Twilight Saga' film series and fell in love for real.

As Edward and Bella, the pair - who were together from 2009 until 2013 - had to shoot love scenes, something with Pattinson found to be very awkward.

Speaking to Parade, he said: "I think the more comfortable you are with each other, the harder it gets to do any kind of really intense relationship scene. You're kind of thinking, 'I don't want to embarrass myself in front of this person.' "Watching other people have sex is never going to be that spectacular anyway. It's a strange thing when there's so much hype about it. You are like, 'God, I hope this lives up to it.'"