My wife suspects me of cheating (cont.......)?

I cannot understand where your wife is getting this notion from when you seem to centre your self around her and the children. Has she been hurt in the past? or are you her first as well? if so then, is it possible her father cheated on her mother? She needs to find out what issues in her life cause her to question the actions of the people she loves. She will only end up pushing you away and your children will grow up with the same problems as her and no one wants that. My step dad cheated on my mother and this caused me to be a bit of a green eyed monster in the first few stages of my relationship with my fiance. Now I have realised that not everyone cheats and lies and have relaxed a little. She must have some deep rooted issue in her life that has caused her to be like this, this sort of behaviour does not just come out of nowhere. Unless she realises that this is her problem and she needs help with it, your marriage may not last the course.