if you found out one of your parents was cheating on eachother and the other didn't know what would you do?

I would probably try to ask the parent whos "cheating" whats really going on (maybe their just frineds) and if she says that they are just frineds and you have seen them kissing/huggind/cuddling i would tell your other parent. Afterall, you wouldent want the feeling of someone you love cheating on you.

I guess I would tell other relatives, and let them do the talking for me.

Do some investigating of my own like scooby doo. Only joking.

I would tell the other parent/relative. Why be with someone if you know your prone to cheating. Also cheating proves in most cases that you don't like that person enough to be faithful unless you were drunk, had your drink spiked or anything along those lines. Having an affair can destroy lives.

I would make sure that I was 100% sure of it and I would tell my parent that the other one is cheating on them. It's so much easier than just pretending everything's okay.

Agreed. I know for a face both my parents are cheating. But last time my dad had an affair which my mom found out and she tolerated it til now... That's like what? A DECADE ago? So I guess this comes wit getting married, Prepare to get cheated. Only one point, DUN LET YOUR KIDS KNOW. It's HARD on them.

This will make me sound like a total dumbass, but I wouldn't tell the other parent. My father cheated on my mother, and it tore her apart. It haunted her everywhere. Everything for so long was permeated by that fact. If you are ONE HUNDRED PERCENT sure that the parent is cheating on the other, I would talk to that parent maturely. If they have the dumbass guts to do that, then they NEED to have guts to be able to talk to their daughter and tell them why the hell they're doing what they're doing.

From that reason, figure out what to do.

ohmigosh. i'm so sorry you have to deal with that. uhm; well, i would probably tell the other parent.