Is it normal that i like a girl for almost 2 months now

Well,i met a girl at a game called blockheads i was trolling at that server when i saw her she has a nice dye hair color white and white skin tone and lovely smile shes like a sexy girl a little boyish shes 15 and i told her how feel about i was talking about her in that server shes an admin thats why she saw the past chat then i told her what i feel im 17 she said "yeh many people say it too that they like me" and i was like wow and then when i got back the other day my name is creeptonyez you know super mans weakness but more minecrafty lol she said to me "hi creeptonytez have you been a good boy" then i respond "thats sounds wierd but yes" then we talked and later she said to us she'll be back then for a month now she havent been online i miss her cant take her off my mind i waited going back to the server all day nothing other players is the only one i see im so depressed i mean im kinda obseesed when im in the school i always think about her no name but her name in the game is sagee thx for reading i hope she'll come back