Do u think i did my ex wrong by talkin to my other ex when we was goin out?

see me and my ex boyfriend was goin out before we broke up but anyway when we was goin out i saw one of my exs at my skool and he was like can i get your number again so we can talk so we talk and he was like im not over u and he ask me was i over him and i said no and he was like can we go back out and i said no i have a boyfriend and he was like ok then me and my boyfriend got into it so i called my ex and sayed lets go out of course he said ok and the next day me and my boyfriend broke up and i went home cryin for wat i did and i felt bad and till this day that we broke up i still want him and i dont kno what to do and i havent even told him that i was talkin to another boy and i wish i would have never did that