I echo what AnotherEmma said on page 11.
I am worried about you, OP. I agree that throwing in the towel on a marriage is not easy, or giving up on someone you love. I respect that. On the other hand, I wasted the best years of my life on unworthy men. Please don't end up like me. You're young - only 31 - and trust me, time is on your side.
Maybe you feel you owe it to yourself to give this another shot, but it sounds to me as though your husband doesn't know what he wants. Or he is just incredibly immature. Or he has had his head turned. Unfortunately, in my experience, when they don't know what they want, it's usually because there's another woman waiting in the wings.
My ex flip-flopped like this. I went to therapy, alone, and the therapist asked me: "What do you think you will gain from being with someone who doesn't know what they want? Do you think you will ever have peace of mind with him?"
That stayed with me. We broke up and soon after I found out about his OW and he moved in with her.
You sound lovely and deserve so much more. Please don't try so hard to hold on to him - let nature take its course. There comes a time in life when we reach a fork in the road with someone - the point at which we both want to walk different paths and it's time to part ways. Let him go honey. There is a better life and a happier future for you beyond this relationship.
A good friend of mine, sadly no longer with us, was in a long marriage with a bloke who said horrible things about her appearance. She struggled with her weight and he wouldn't have sex with her, only with a series of OW. She made a huge effort and eventually lost the weight but he still wouldn't have sex with her, just found new excuses.
She divorced him after 20-odd years and eventually met someone who absolutely worshipped her and was completely devoted to her, and she wasn't a size 12! (neither am I), and he never left her side till the day she sadly passed away. To this day he still calls her his soul mate. My friend's last decade was a very happy one with her new partner. She said to me: "I wish I hadn't stayed with my ex so long. But I did because I didn't believe in myself - I believed the bad things he said about my appearance and thought no one would want me. But since we divorced my life has been lovely."
I say this because you could have this happiness too. You don't have to accept the treatment your H is meting out. As for asking him if there was someone else, and he said No, and you believe him, I'm sorry to say that happened to me too. They say that liars can't look you in the eye but that's not true. My ex did, and was very convincing. He was a good liar.
Please prepare yourself OP for the fact that it may not be possible to save your marriage. Thinking of you and wishing you strength and peace xx