Robert Pattinson & Kristen Stewart 'back together' for starlet's birthday? 'Life' heartthrob plans surprise LA visit amid Dylan Penn 'dating' rumors?

Robert Pattinson and Kristen Stewart are NOT back together - yet.

Rumors suggest that R-Patz is currently romancing aspiring model/actress Dylan Penn... but Sean Penn's daughter heatedly denies such dating rumors.

(Dylan Penn)

So, how about that Robsten reunion?

Several gossip tabloids suggest that K-Stew really wants to celebrate her 24th birthday with the British heartthrob on April 9th. But is Pattinson too busy filming the new movie "Life" in Toronto to take the time off?

Maybe - maybe not.

An alleged insider for HollywoodLife.com reveals, "If he could fly to L.A. and see her for her birthday he would do it in a heartbeat."

How sweet! Maybe a romantic "Twilight" reunion can really happen! 

So Mstars fans, whose side are you on - Team Stewart or Team Penn? Or simply Team Pattinson! Stay tuned for April 9th to see what happens.