He bites me instead of kissing me. Is there something behind that?

My new boyfriend bites me instead of kissing me. Examples: he reaches out to kiss my cheeks but bites me, he is holding my hand and reaches to kiss my fingers, but bites me instead.

I might ask him, but I don't know how to make this question less creepy.

Anyway... why do you think he does that?

He bites me instead of kissing me. Is there something behind that?
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