We are a little shocked to see Katy Perry still cozying up with rumored boyfriend Diplo after news broke over the weekend that he's expecting a second child with his ex girlfriend Kathryn Lockhart. Guess she's more understanding than we are -- but we should have known that already she did date John Mayer -- yuck!

The Major Lazer DJ and music producer is said to have impregnated his former flame Kathryn Lockhart, whom he already has one child with, before he and KP began dating in April. Over the weekend, the DJ changed his Twitter handle to "Baby Daddy" all but confirming the rumor. If they started dating seven months ago -- that means Diplo's baby mama must be pretty close to being due! But it seems like Katy doesn't mind that her man's got another kid on the way ...

Diplo and the "Roar" songstress were spotted on Sunday departing a private plane together at Le Bourget airport on Sunday. Katy, Diplo and her entourage are continuing the "Last Friday Night" singer's 30th birthday celebration. Last week, the color-changing singer gathered family and friends together for a trip to Morocco. Now it seems Russell Brand's ex wife is keeping the party going with a jaunt to Paris. We can't blame her!

Looks like cupcake-wearing star isn't letting ANYTHING ruin her bday plans!

Can't Katy pick a good dude sometime? We hear Chris Martin is single again!