Cameron Diaz Picks Up Jessica Simpson's Trash

With all the ex-swapping that happens in Hollywood, everyone must be a walking petri dish of everyone else’s germs!

Cameron Diaz was caught cozying up to Jessica Simpson‘s ex, Adam Levine over the weekend.

The twosome were spotted having a romantical lunch together at the Chateau Marmont in West Hollywood on Sunday.

What we want to know is how JSimpleson is landing these dudes before Cam?

[Images via WENN.]