Calling all ladies that are Married!!

So the guy I’m dating and I are having a lot of problems we have a lot going wrong in our relationship. I don’t know what to do because we’ve been together for almost two years there’s talk about getting engaged and moving in together.... here’s the thing ladies the guy that you married has he ever cheated on you and or disrespected you in a way you couldn’t get over but did because you love him? I honestly don’t know what to do I feel so stuck. I know women say oh if he cheats he isn’t the one this and that but I know there are also couples that have been together and have gotten through all the bad shit. So what do I do any advise I’m really struggling.