Should I (18F) confess to my friend that I might like her (18F)?

This friend and I have been friends since freshman year of high school and we recently just graduated, so we’ve been friends for four years. I think I began liking her sometime around sophomore year, but I just didn’t necessarily realize that I might have feelings for her lol. I haven’t told her since she’s had other relationships with other people so there’s never really been a good time for me to tell her.

Sometimes I go back and forth and wonder if I have/still have feelings for her or not. I overthink about our relationship a lot, such as if I could do better or if I did anything wrong, but I’m not sure if that’s because I have a crush on her that I overthink or if it’s just because I’m in my head a lot anyways. But thinking about us dating makes me feel happy so maybe I still have feelings for her? I’m really not sure.

I kind of wanted to tell her this summer before we go to different schools for college because I figured why not, on the very low chance that something happens, either way, I will know how she feels. We’re both bi lol so there could be a very very small chance that something could happen. But I’m also worried that it’ll make our friendship more awkward or that I could ruin the friendship. I might see her for work next year and that could be awkward lol. I’m also worried that telling her is a selfish move, since it could put a strain on our friendship and make things complicated.

I’m also worried that “what if I tell her, and she thinks that all the compliments I’ve given her are because I had a crush on her and not because it was platonic” and idk maybe I’m overthinking it and that’s not a bad thing but I don’t want her to think that I just stayed friends with her because I wanted to get with her. I really don’t know what to do lol but sometimes I kind of want to do something and act on how I feel at least once in my life (and be honest with her) because I’m tired of bottling my emotions up for other people and never trying. But then again, I don’t know if this is a good idea.

Reddit, help me out: what should I do?

TL;DR High school friends (just graduated) and I’m not sure I have a crush on her but thinking about us dating makes me happy- maybe I have a small crush on her idk? But want to confess before we go to separate colleges bc I want to be honest with her but not sure if this is a selfish thing to do (could ruin friendship).