Unstable relationship

My boyfriend and I went out toghether all last year and i ended up losing feelings in the corse of time because of constant fighting and so i broke things off with him.. the break up was relieving for me and VERY difficult for him but i didn’t talk to him or let him express himself to me. After a few months he started to get his life back on track and i started to feel depressed about the break up. I reached out to him and we started dating again even though he will probably always resent me for our past breakup. This time around it feels like we switched roles.. im more loving and clingy and hes more independent and distant. We fight constantly.. most of the time its because of my insecurities of the relationship. I love him A LOT and he says he does too and he doesn’t want to break up again but he doesn’t constantly show/tell me that he loves me like he used to and since he is busy with other things in his life, i feel extremely stressed about our relationship whenever we’re not toghether and even sometimes when we are spending time together... at this point i don’t know if its me the problem or our relationship.