Both of our greys are obsessed with kissing, though Max's obsession usually manifests itself verbally. She is always asking for kisses and making kissing sounds. Stella has taken this to an entirely new level.
If she doesn't see Thomas for about 10 minutes (or longer) and then he reappears, she flies over to him and sticks her head toward his lips.
I'll do in a pinch, but Thomas is really her preferred set of lips!He repeatedly tells her to get a new hobby, but I remind him that we're all she's got! Plus, they do tend to get obsessive about something for a few weeks and then switch to something else, so he should enjoy this while it lasts!