Hi there...I'm new to this site. I don't know all of the circumstances regarding your relationship with your husband. But, I do know what it is like to have a husband to ask for a second chance....LOL!!! sorry......it's about the 17th chance I've given my husband!!!! We have been married for almost 23 yrs, but we live separate from each other. We do see each other quite a bit. He still keeps on trying to gain my trust in him...but he blows it for himself sooo many times. I'm glad that we live separately....it has worked out best for us. But I'm not saying that is the thing for you to do.
After 22 yrs you have a lot of history with each other!!! It's difficult to just walk away. Deep in my husbands heart I think he does love me but that he has issues that he needs to seek professional help for.
It does sound like you want to give your marriage another try..but that you have some reservations about doing so. I would proceed....but with caution. Have the two of you ever been in marriage counseling? It might be what you both need to repair your relationship.
From what I know of problems they rarely go away without working on them. And that's really what it takes. Two people that are committed to their marriage and are willing to bring change to themselves.
Whatever you decide remember...it isn't written in cement! You are allowed to change your mind. I wish you well in whatever choice you make.
Sweet

"It's never too late to be what you might have been". George Eliot