You are not the morality police. What gives you the right to pass judgement on others in this way and intervene in their private affairs? More importantly, why would you want to? There's more to this than you've let on. Why not admit it and we can try to work something out from there?
I think the problem with OCUK is everyone thinks there is more to something than what is said, there is 40000% nothing more to this, no one reading anything to do with advice threads takes what is said at face value - im afraid there is nothing more to it than what is stated. I also have zero interest in her as many many many people ASSUME, I honestly don't, I cba to say this again as we are just wasting time! lol - Day to day it honestly has nothing to do with me personally other than what I am about to write now.........
The reason I have moral issues with it is:
1) Its wrong
2) He tried to get me to help cover up his lie, I do not want to be involved in it. This is perhaps the main reason I took such disgust to it and posted my woes on ocuk

, as I know I will see her / them as a couple at some point soon and I would have to lie to her face.
3) I am not friends with them, but acquaintances, they are friends of a good mutual friend of mine - a few times a year they are out with a large group I am also out with..............this would mean I would have to sit there and pretend all is fine
4) Following point 3 because we have a close mutual friend I know full well she is 'really into him' and 'loves him with all her heart', it's known that she adores him............this just makes me feel more uncomfortable and do an epic face palm because she's just getting walked over
Lastly, everyone is jumping to 'what's it got to do with you NOSY **** etc' .........well, as someone said above, what's happened to society these days where anyone has a right to do anything they want ? I feel thats a little ........cowardly.........
I also dont think 'I was rude' to him..........people who are saying this to me, how 'rude' is he being to his adoring gf ?........I think only 1 person replying has thought about her.......he said tell her, iv decided not to,........... I find the middle ground I had here is ok for me, I told him he is a **** and leave me alone, at least someone he knows now, knows his secret and is not best pleased with him - at the very least I Hope this has 'shook him up enough' to tuck it back in his pants and not be horrible to his mrs or at least do the honourable thing, grow a pair and dump her if he wants to go off with loads of women.
*awaits flaming - but I stand by what I said, I can't really find it in myself to change my views on what's right/wrong at the end of the day :/