I am so stupid help me😱

So I had horrible boyfriend and I dumped him (he was really mean and nasty to my friends and was really disrespectful to me) anyway so I dumped him and I was unsure if I wanted to do it or not but I did and I was proud of myself but a day after I broke up with him we kissed and well I sort of liked it but now we are not together and he won't talk to me about what happened I think he wants to get back together but I don't and I don't know how to tell him but I made a mistake and i don't know what to do somebody what should I do😳😳😳😳😳😳😳😳😵😵😭😧😧