Feeling sorry after cheating is stupid. The act of feeling sorry for the actions one has committed is looking back and wishing you hadn’t done it. That’s regret, but now regret is an obsolete feeling to express because living in regret is just wishing for things to have been played out differently and the fact of the matter is that they didn’t. They hooked up with someone else and as much as they may feel sorry no one is really really sorry for hooking up with someone. Much easier and realistically is to simply come to just plain terms that it happened and talk about why it even occur than to simply apologize and look back at that action as a mistake rather than an experience just like the rest of experiences we choose to go through with.