These two are living together?

Not insinuating anything here...but I do find it very strange that Nick Lachey has moved in with Matt Leinhart (the senior QB for USC Trojans). Of course, Matt is on the right in the second picture and not the boob of the left. But why would someone that is old as Nick with a somewhat career live with a college senior.

I am sorry but this is just strange. Why? But to be a fly on the wall in that apartment!