Is there something wrong with me?

I've been with the same women for the last for years an we have a daughter together she cheated I took her back but I don't feel the same is that normal? I feel lonely sometimes ever since I moved out sometimes we fight an I could care less if she stays or goes then I'm like I miss her but can I really be with out her? Maybe I need time to myself an she won't give it to me sometimes I feel great when were together other times I'm like what am I doing idk what to do.... Plz comments need some advice