Idk what I should do (me 15m and friend 14f)

I know this will sound stupid because I'm only 15 but I met this girl this week and we would always be on the phone and sleep on the phone and hangout. We even held hands and cuddled once at a sleepover last night. Everything seemed good today until my friend asked if she liked me to which she responded she didn't. He's know her for years and said she could be lying it's hard to tell with her but I don't know. I fell so hard within the span of a week and now I just feel so stupid looking. It’s just she made me forget about all the bad things happening in my life and now she’s mad at me and everything in my life is rushing back to me