Love currency

T really likes to feel our teeth. I assume this is because he's only got the 4 and they're new toys, so he wants to know how ours feel. Yesterday, we were sitting on the floor and he was feeling my teeth. I'm not sure how it got started ... I would let him feel my teeth and then when he started poking my gums, I'd close my mouth tight so he couldn't get his little fingers in. Then he'd grab my face and give me a big slobbery kiss. Then I'd let him feel the teeth again. This must've gone on for 15 or 20 minutes. Maybe it's wrong to barter for kisses, but I'd do it again.