Robert Pattinson and Kristen Stewart: Obsessed with Each Other!

For Robert Pattinson and Kristen Stewart, a duo whose smoldering Twilight passion has exploded into real life, absence makes the heart grow fonder.

It may also kill them, they are so obsessed with each other.

Rob is in New York for the summer, shooting Remember Me. Kristen is in L.A., working on The Runaways, a rock biopic in which she portrays Joan Jett.

According to OK!, that the young, white-hot stars are more than friends is beyond dispute at this point. It's just a matter of where they go from here.

“It’s no secret that their relationship has been heating up these past few months,” says a source close to the pair, who recently completed New Moon and who have sparked rumors that they might be dating for over a month now.

“[Robert Pattinson and Kristen Stewart] are very attracted to each other, and there is definitely something very special going on between them.”

Something very special and complicated.

Kristen is apparently still involved with her longtime boyfriend, Michael Angarano, while Rob wants her to choose, one way or the other, by October.

That's when he and Kristen start the third Twilight film, Eclipse.

But while Robert Pattinson has given his love interest a few months to decide between suitors, sources say he’s making his interest in her known.

The actor is constantly texting and calling Kristen Stewart to "check in," according to a source, and inviting her own to New York for a weekend.

Will she visit? Should she visit? Will Robert and Kristen be together? Will Michael Angarano be a thorn in Rob's side? Stay tuned.

Robert Pattinson is obsessed with Kristen Stewart, according to celebrity gossip insiders, and wants his Twilight co-star to choose. Him, preferably.