Replying to How many of you have cheated?

Last night I was out with a group of guy friends and turns out that at some point in their lives every one of them has cheated on their girlfriends. And all of them said they'd do it again but not because they didn't love their girlfriends, just because they knew they could and she wouldn't find out.

Now I didn't think I'd ever been cheated on but this leads me to believe different.

I've cheated once, on my HS boyfriend with a dude I ended up living with for 3 years but other than that, I've always been faithful.

How many of you have cheated on your current or previous girlfriends/boyfriends?