Why does a guy, while making out, grab my ankle and push my leg towards my chest?

Anonymous
While I made out this guy we were laying down on the couch with him on top of me. And with one of his hands he would reach down grab my ankle and then push up my leg towards my chest, not pushing it up all the way. It was something I've never had a guy do while making out, so I was really curious!
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+1 y
And it never lead to sex! Just making out.
Why does a guy, while making out, grab my ankle and push my leg towards my chest?
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