When two actors act like lovers for a scene, it's hard for them not to fall for each other. Yet, since it is all about work, actors should have much self-control and learn to set aside their personal feelings. Obviously, this didn't work for "Twilight" stars, Kristen Stewart and Robert Pattinson which makes fans wonder when and how Robert Pattinson fell in love with Kristen Stewart.

According their director, Catherine Hardwicke, it was apparent that the two had a connection and the chemistry was evidently there. She reveals in an interview saying:

"I thought Kristen was just amazing in Into the Wild. When I read the novel Twilight, I kept picturing her in that scene, where she's sitting in the trailer, hoping to seduce Emile Hirsch. Her yearning was palpable, real, and intense. I thought, "This girl would be wonderful." So Summit flew me out to Pittsburgh, where she was shooting Adventureland. We took an actor with us and improvised a lot of scenes. To find Edward was tricky, because how he was written, he was perfect, with these cheekbones, and he was also wise beyond his years. We whittled it down from hundreds of actors to four. I'd only talked to Rob on the phone when he was much younger. He flew out on his own dime and stayed on his agent's couch. The four actors came over to my house and we workshopped all the "chemistry" scenes. With Rob and Kristen, it was apparent that those two just connected and had a magnetism for each other that was electric, right there on the spot."

It seemed like the two were destined to be with each other as Robert Pattinson was not the first choice to play the role of "Edward Cullen" in the franchise but it was due to this chemistry with Kristen Stewart that he got the role. It seems that it was evident the two really did make a great couple whether in movies and even together as a real couple.

They should really get back together and fall in love again which according to latest reports isn't far from happening.