What goes on in Vegas most certainly will NOT stay in Vegas here!
Watch it go down (below)!!!
Yep, according to an onlooker, the A-Listers were engaged in a HEATED three-way conversation!
LOLz! Get your dirty minds out of that gutter!!
There WAS a little bit of touching, though, as one source claims Jen kept her hand on Bradley's shoulder for at least part of the evening.
[Image via WENN.]