My boyfriend likes touching my bellybutton?

Laurelin
So we have been dating for about a month now and this is my first real relationship. We make out and do other stuff but for some reason he likes playing with my bellybutton and I don't understand why. He likes putting his finger in it and kind of pinches it? I don't get what is so facinating or the draw of playing with my bellybutton. Any ideas?
My boyfriend likes touching my bellybutton?
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