How To Deal With Mid-life Crisis?

Hello, mymbofriend ofm17 years has been going through some really different changesmand emotions. He has stated he loves me but not in love, and spark and excitement gone. He is moody, sometimes cold, then nice again. He says he wants me to move out because he just is not happy. He does not have an actual problem with me intimately. He says all this and also never type to have an affair. But he talks to a gal at work, while I was away to see family for two mo. He admitted to cheating. He is a very honest guy and normally wou.d never do this to me. I have been reading alot and know that alot points to a mid life crisis, from all his emotional turmoil and confusion. He says they will never ever gomanywhere, but yet he afraid to tell her specific not see her. Because they do work together. But yet she and he still talk and text. I cant bet throuh to him this happens to many couples after so many yrs. Asked him to counsel, he says I dont need someone to tell me what I know I feel. Yet he does not want me to move back to Ohio or far away. And still wants to see me and do things. I am lost. Can low t be possible also, and cause his rollercoaster . He ismverymstubborn and hard headed. He says is NOT ME AT ALL.. IS HIS OWN FEELINGS. AND DOES NOT EVEN UNDERSTAND WHY HE FEELS THIS WAY. AND YET OUR SEX LIFE IS STILL REALLY GOOD. BUT HE THINKS HE NEEDS SPACE?????