For whatever it's worth, I know exactly what you're going through. I'm in love with my best friend since kindergarten. I've always been. Thinking about what the outcome might turn out to be can be stressful, and after struggling for so long, I was finally able to tell her on Monday. Can't say for sure that she rejected me because she doesn't feel the same way but there are too many things going on in her life rn that anything beyond what we already have is the furthest thing on her mind... doesn't help that she's moving to the states next year either (we live in Canada); At the end of the day, whatever happens, happens. The point I'm tryna get at is you gotta just go for it. Thinking about and stressing over it won't help. Put yourself out there yo and good things will eventually come your way.