Psychologically, why do men like to dig their fingers into your hair & scalp while kissing?

We had our first kiss. Both of us are a bit reserved and shy (though he’s a bit more dominant.) We were hugging each other firmly with our full bodies. I went in for a soft kiss, and he ended up French kissing me in return. He took his hand and dug his fingers into my scalp, and it was so wonderful and sexy. 🙈😆 We grabbed each others hands and clasped them, and gave each other alittle squeeze, and then I left to go home.

Psychologically, why do men like to dig their fingers into your hair & scalp while kissing?
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