"How can you tell?" He's not denying it, but he is curious. Although he suspects it's probably her lawyer superpowers. That would make the most sense.

For several moments, Deadpool pauses and looks at her. There's something poetic going on here wherein she is seeing what he is after and letting him have it, and in turn he's coming to see what's going on with her and deciding to let her have it. If anyone deserved and needed some calm goodness in her world, it was Jen.

"Well then, time to get smashed, amirite???" He grabs a whole platter of passing drinks and tops her off. "I wonder what's in these? Because baby, it's cold outside."