Why would he do this?

I've had 2 bbq parties at my house where I ask people to bring sides like a potluck. Each time, this guy brings something but ONLY for me. The first time, he brought dip but hid it in the fridge because he only wanted me to have it. This time, it was a premade breakfast that was going to help my hangover in the morning.

He just tells others that he forgot or brings something else on the side. No one ever knows that he comes and hides something in the fridge. I don't know what to make of it.
Why would he do this?
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