Does my guy friend like me?

I have a guy friend who I really got along with. One of our mutual friends even pointed out once that she's never seen him tease anyone else as much as me. But he became distant a few weeks after he found out I have a boyfriend. This distance period lasted a little over a month, but now he's back to normal. He even bought me a pin for my backpack when he travelled abroad (I am known for having a bunch of pins on it), and said that when he saw it, he instantly thought of me. Although I appreciate the gesture, I can't help but wonder if it was purely platonic or if there is something else there. What do you think, internet?

Does my guy friend like me?
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