It looks like Kristen Stewart and Robert Pattinson are still pretty close, which creates speculation on just "how" close they really are.

Robert Pattinson Misses His Ex?

There was a recent report that Stewart wanted her former Twilight boyfriend to join her for her birthday on April 9 in Los Angeles, and now it appears that the actor may actually be willing to make an appearance.

On Monday, Hollywood Life reported that Pattinson might have some interest in joining his ex for her big day.

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"If he could fly to L.A. and see her for her birthday, he would do it in a heartbeat," a source reportedly told the site about the former couple.

If this turns out to be true, then it sparks up anticipated curiosity for what would happen if Pattinson does indeed show up for Stewart's celebration. Apparently, she might really want him to be there.

"Kristen wants to celebrate her upcoming birthday with her close friends in LA, and she wants Rob to join them," a source told Hollywood Life. "Even though she hasn't seen Rob in the longest time, they still talk all the time. They text, Skype. They are both pretty much in the same place right now, just focusing on work and staying focused."

The site also mentioned that the ex-couple, who might just be friends now, had a discussion on adopting another dog so Stewart's other canine Bailey could have a friend.

"Kristen asked Rob what his thoughts were about her adopting another dog for her birthday," the source continued. "Kind of like a gift for her and Bailey, cause Bailey wants a friend."