Robert Pattinson and Katy Perry are the new couple on the block and their relationship is getting pretty serious, media reports confirm.

Robert Pattinson and Kristen Stewart are so last year! Now it's Pattinson and Katy Perry! The two have been making headlines ever since it was reported that they are an "ITEM".   Things seem to be getting serious between the two, though Perry still has a lot of apprehensions about Pattinson and his off-and-on relationship with his ex love interest Stewart.

"She's mad about Rob but is so terrified of getting serious and hurt again," a source told Web Pro News. "I think that's why she's trying not to get too involved romantically. She'll also be super cautious of becoming one half of a celebrity couple yet again."

Pattinson and Perry have been friends for a long time now. Though the two were seeing other people previously, they continued to maintain a strong friendship with each other. Perry has previously been in relationships with Russell Brand and John Mayer.

The two have been spotted together frequently and most recently at the premiere party of Rob's upcoming film, "The Rover."

Other media sources reported that the 28-year-old now wants to take things to the next well with Perry.

"Rob's behavior makes it clear to anyone who sees him with Katy that he's interested in taking their friendship further, a source told Gossip Cop.

Many people are also concerned that the singer may get herself pregnant since she's been hooking up with many guys. Before Pattinson, Perry was linked to flings with Diplo and Rob Ackroyd. OK magazine reported that the "Dark Horse" singer is "looking for validation" since her breakup with John Mayer.

"Several people in her crew are worried she might slip up and get pregnant," a source told the magazine. "She certainly has plenty of potential baby daddies in the mix. Friends fear her trysts may have bigger, more permanent implications."