Why would a boy FaceTime me every night?

One of my guy friends suddenly started texting me a lot and for 4 nights in a row, he facetimes me. At first I thought it was to annoy me then hang up (like he’s usually done in the past), but he’s been actually staying on the phone about 2-3 hours each night.

He’ll tease me and jokingly flirt. I think he’s just toying with me but I don’t know.
Why would a boy FaceTime me every night?
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