Is it selfish to wanting to find happiness and throwing away 10 yrs?

The father of my child and I have been together 10 years. I’m 27 so since I was almost 17 . We now have two kids but before my second one it seems our downs stayed consistent . We moved away from the past but it’s clearly still resentment hidden and it shows .

When we get into bad fights my past is always brought up . We don’t hang like we used to, he is always out and never answers my calls and makes me feel if he’s cheating . I will text him paragraphs and he will barely respond to me. It hurts really , especially knowing things aren’t how they used to be when we used to be in love. It’s hurts me when I look at him and everything has changed . But the fact when I ask him for the truth he can never express hisself and will give it a day and go back to callin me bae and do the same thing all over again .

I feel he hates me for things I have done to him I’m retaliation to things he’s done but I let it get over my head. I never see him Bc he’s always working , he will sleep majority of the day, come home chill for an hour , go to sleep and do it again . We never go out on days off, we finally went to the movies after almost 6 months . I just don’t know what to do, we barely talk.