what to do ?

Tweet

I have this friend named timothy , me and him where at this thing and we had to stay up all night , i stood up all night hanging out and talking to him and we kissed twice i was so happy then i remembered something he has a girlfriend and they have been going out for almost eight months to make it worse my best friend really really likes him. me and him promised not to tell anyone. idk what to do because i want to tell him i really like him and the it hurts every time he acts like it never happened and it hurts when he acts like i doesn't exist when he with his gf