Funny that I came up with shoes, and he's not able to decide on them either. But it isn't really the same. He has decided on you and not OW. But he doesn't show that he values you.
I think you are close to finishing the Post sessions. When we got to the next to last one, I think the homework was something to the effect of "go home and forgive each other for what you are holding against them." We did the first part....we went home. But nothing changed. And we went back the next week and graduated, but the hard work wasn't done. So this troubled me. I brought up the forgiveness thing, and he said he would think about it. But he was holding against me stuff from the beginning of our marriage when I asked my father for marital advice, rather than just listening to my husband. I felt that if he could justify an affair based on conversations I had 20 years ago, I was lost.
So I pulled out all the guns in my arsenal. I had him read what Michele says about forgiveness in DB, and what Retro says, and I think I had another reference too. He never said he forgave me, (he's not much of a talker), but after that he was better. And when I got a windfall of money a few months later I offered to pay off some debts in exchange for him dropping his resentments. Maybe that was what worked.
I agree with the others though, take a break if you can. I think the 4 page response and long discussion after shows that he IS with you. Hopefully the rest will fall into place.
