Am i falling in love ...?

i dont know what is going on with me?? I feel so sad and cry when he say he want to leave?? I like him but I like to joke with him alot... Yesterday he ask me if i like him. I say i like him but he dont believe me . i quarrel with him and told him that i will not blame you if you dont trust me because it's my fault to joke with him first because i want to be more of a friend to him first . Now i know he cant take jokes and i'll be serious. instead of feeling more anger i feel sad. Why did he ever pursue a relationship to begin with?I send him a farewell text . He say he is not leaving anymore, he say he love me?? What's up with him?