I have a weird crush?? And I don’t know what to do

So I’ve been friends with this guy for 3 years. I met him when I was a sophomore and he was a senior. Over the time I’ve known him, I’ve seemed to develop feelings for him and I’m terrified because the last time this happened I was rejected very embarrassingly.

Anyways, I don’t know how he feels about me because he’ll call me nicknames ( all good things )that nobody else does and he’s so sweet. I’ve only just discovered this crush since I suddenly started to cry when he said he had to move to Maryland.

I don’t want to ruin what we have but I want to see if something could happen. If someone with more relationship experience can help, please gimme advice.