I guarantee you he's already jealous. Probably jumping to conclusions. You don't wanna have a little fun with him~?

[Lambert knows that Geralt wouldn't buy it if they attempted to make him believe they were courting. Maybe the big oaf isn't actually even jealous, maybe he's simply annoyed at the both of them.

He reaches up to tuck a stray strand of hair behind her ear, letting his fingers trail along her jaw and come to rest under her chin, then leans in to steal another kiss.]

I'll be in the library, if you need me.