Is this normal anyone else felt like this and came out the other end??

Hey ladies I was going with a guy from I was a kid up till about 19 and we still kind of see eachother every few months I’m 22now and it’s been the only sort of relationship I have been in! I fell pregnant at 20 which was an accident but I ofcorse kept the baby as it was my mistake ! He went on to have 2kids with someone else, and I have was also seeing another guy for a year.. but I honestly wasn’t feeling it... he give me everything I ever need (which is not a lot but it’s appreciated when he did ofcorse) and treated me so well.. but I just wasn’t feeling it and I really can’t seem to find anyone even close to liking as I always just think about my ex.. I just kind of feel like I’ll never be able to love again or be loved because I push people away because I can’t find anyone I like.. it’s just annoying me as I want to have a relationship with someone... 😖