He is a coward, to go through all the motions, going to the MC, stringing this out for so long when all the while he was seeing someone else and lying about it. If she is the 'prize', what does it say about her if she was willing to sit back for 3 years all the while knowing about you? I hope you are wrong and no baby ever comes from that, ick...
Sorry K. I know that doesn't help, I am sick for you and your kids.