Really Fucked off.

So i was w my ex for 4 years we split badly and he was always a pos to me i got w my fiance 3 years ago and weve had issues in our relationship like me working a full time job and him not Paying shit or doing shit and i felt unloved amd lile anytime i talk to him about hisself he gets mad and it doesnt go anywhere me amd my ex were texting for a couple of weeks and my so find out we talked and Ultimately want to be together and worl through it I know what i did was immoral and worng and ive already sworn to not ever do it again gave him all passwords and am completely honest about anything I am doing , Can it be fixed or did I fuck it all up?