Chickie, take the marriage and kids out of the equation here. If you were simply dating this guy what would you do? I thought so..
Exactly.
Chickie, it doesn't work the way you think it does with guys. You think if you kiss my butt and make me my favorite meals and have sex with me whenever I'm horny that you'll win me away from the other woman. It's almost like a competition. Who can love me most and the best. And it must be okay to have this other person because you aren't complaining about it. Rather, it must make you love me even more. Well that's demeaning to you. What price will you pay to have your husband back? Complete loss of who you are? Will you essentially be his slave from now until you die in order to keep him?
Yes, tough love will push him toward her initially, but it will drive him crazy that he can't have you anymore. As far as asking him to move out...you should look at legal options...a separation agreement. Or move his stuff to another room. Or move out yourself if you're able, although I don't like that option.
In the end, it's not the years in your life that count. It's the life in your years. Abraham Lincoln
It is hard to fail, but it is worse never to have tried to succeed. Theodore Roosevelt