Advice please..

okay so I went to a football game and my crush went too. when we seen each other we said hey & he put his arm around me. he already knew I liked him. I was so happy. we acted just like a couple. we were all over each other, hugging, holding hands, & just never letting go of each other. I was soooo happy. at the end of the game he kissed me! And he said he'd text me later and left. I waited for his text but it never came.. I waited 2 weeks. :/ then I saw his snapchat story of him saying he's in love with one of my friends.. :( it kills me when I see them together now.. and the girl doesn't even like the guy that much.... what do I do?