Kristen Stewart's boyfriend has not been handling the persistent gossip surrounding his girlfriend's relationship with Robert Pattinson well, it's claimed.

Whilst much has been made of Kristen's on-screen chemistry and off-screen friendship with her Twilight co-star, real-life partner Michael Angarano has largely remained in the shadows.

But apparently even he is starting to wonder about the those romance rumours.

“Michael is really insecure when it comes to Rob,” a pal tells E! Online's resident gossip Ted Casablanca.

“Rob and Kristen would have to be very sneaky if they were dating. Everywhere [Kristen] goes, [Michael] now wants to go too. He’s extremely jealous.

“And let’s just say he’s been trying to be up in Vancouver a lot lately.”

Rob texts the night away at the Gibson Guitars 2009 Junos pre-party last month

It seems Rob may not have been helping matters.

It's claimed he deliberately attempted to be papped out and about with Kristen last week in a bid to deflect attention from stories he's dating his other New Moon co-star Nikki Reed.

“He doesn’t want [Kristen] or anyone to think he’s dating Nikki,” says a source.