I've been reading Whyonearth's post and find myself in a similar situation. H and I have been together 25 yrs, 2 late teenage children. 5 years ago at the end of some couples counselling I found out he had been seeing women ( he says no sex had happened) via a married people dating site. He asked for an open relationship, I said no. We've bumbled along, no sex, no real interest in me, what I'm feeling etc. H is a keen sportsman and has now started a relationship with a v flirtatious woman at his club, I guess about a year ago, which sort of explains his attendance in body but not mind at the second series of couples counselling we had that finished last Xmas.
He also works with her - just the 2 of them in a company he started. I have seen messages between them that leave no doubt in my mind that are involved emotionally. I confronted him recently and he flatly denied it saying she was a 'supportive friend'. He described her as flirtatious and needy, told me about a number of men who are attracted to her and that she is looking for a long term partner - she is recently divorced. He said he was totally committed to his family (but not to me, I noted). I told him I wanted him to leave ( our lovely home which we both love) after our upcoming family holiday. He said 'I'm not leaving' as though this were a preposterous suggestion. I am financially independent, in fact my income is what we live off day to day, although he does contribute about the same overall for projects/hols etc.
My question to mumsnetters is how can I make him go if he continues to refuse? Any ideas and help please!