I just got my heartbroken?

Ive been talking to this girl for 6 or 7 months trying to get with her but whenever i asked her to do something she was busy. I heard she liked me so i asked her out by text. She said if i wouldve ask sooner she would but now she is unofficially dating some other guy. I snapped at her asking why she thoufht i was doing the things i do. I just feel betrayed and idk what to do. Help? I just wanna be happy