First of all Iknow it’s wrong

So I was dating someone we broke up after almost a week I fucked his bestfriend after that we never spoke again me and my ex are working things out again itsbeen 5 months his family doesn’t like me of course and we want to work things out and make it work this time we talked everything out I’m just afraid his parents won’t approve of me no more (we are in our 20s) but his dad always has a say