I love two people but not sure what to do?

I'm engaged to a great man, yes man, 14 yrs older than me. Thing is recently I am finding that I can't stand his family and even 2 of his 3 children. I do love him but with that and more drama/issues that I will leave undisclosed I find that at times I can look past all that. ON the other hand there is this guy (same age as me and his parents and grandparents are awesome) that I have know for 8 yrs, 4 of which we dated on and off and 3 of which he was married to someone, now divorced. But he recently contacted me and we realized that our feelings for each other are still there, they never left. I'm so torn because I have one guy that has done so much for me but there are family issues on both sides and the other guy who we have history, at times maybe not the greatest but both of us are willing to forget the past. What should I do?