Oh my! Blake's boyfriend has been a naughty boy...
He's been caught kissing another gorgeous blonde...

But before all you Blake Lively lovers start cussing the lovely Penn Badgley, don't worry - he was just filming a scene for the next Gossip Girl season!
And that gorgeous blonde he is snogging is none other than fellow co-star Hilary Duff!

The pair were shooting a scene, apparently in the series Hilary (who plays Olivia) will be sharing a room with Vanessa, Dan's best mate, at university.

Looks like things get steamy between them!
We wonder if Blake minds that her real life boyfriend is snogging a gorgeous girl, even if it is just his job!
Would you mind?
Comments please...
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posted by differents...
added 1 week 2 days ago
i could never watch my boyf make out with some other girl-but if i was going to make out with another boy tht was my job, i wouldn't mind
posted by natasha_44
added 4 weeks 2 days ago
Can't wait to see Hilary Duff on GG. Should be good.
posted by steph6397
added 10 weeks 2 days ago
im more into the oc but its not on atm :(
posted by TwilightFr...
added 10 weeks 2 days ago
I've never got into gossip girl but i love one tree hill though. i might start watching it. dunno yet!
posted by emma-rox
added 10 weeks 2 days ago
I got worried! Then realised it was just Gossip Girl! LOL
posted by Ellieellie...
added 10 weeks 3 days ago
hehe you scared me for a minute there!! i like hilary duff i have her cd
posted by love-on-th...
added 10 weeks 3 days ago
i used to love hilary duff, so it doesnt bother me. although serena and dan were amazing togetherr:) x
posted by EmmyCursed
added 10 weeks 3 days ago
hilary duff in GG? O_o
posted by Alannah09
added 10 weeks 3 days ago
Its all parcel and package of being an actor, if its your job then you have to, plus i love hilarys bag :)
posted by Jess1494
added 10 weeks 4 days ago
If its his job, then she would realize that he doesn't have feelings for his fellow co-star and he only loves her :)