Awkward

I'm bi and I have a crush on my best friend and i woke up to her writing a text about how she was straight and I already knew but that just completely broke my heart. Now I sit next to her at lunch and in orchestra and we haven't talked to each other all day and it's really awkward and I really just want everything to go back to the way that it was and I just want to cry. Btw I get depressed very easily and can easily go from the time of my life to considering suicide again. How do I make this better? help