Do you think he will change his mind about kids?

My husband and I have had a rough year as far as our relationship goes. We have been married for 7 years. About a year ago we (he) had the bright idea of swinging. So we did. Not so great turnout. He was talking to the girl in the couple for like 3-4 hours a day, every day. I told him that she was trying to get him to leave me but he didn't believe me until she said something about it. Either way, I had told him to stop talking to her and he became really depressed. So we finally ended that. About 5 months after that (5 months of him not really wanting to hang out with me, staying in his little rec room all day everyday and him still being depressed that it had to end) I cheated on him. I stopped it during the middle of it but what was done was already done. I told him right away and he begged me to stay. Of course I wanted to stay so I did. We have been working at trying to get past all of this for the past 6 months. We have been doing well. I mean we obviously have times where it comes up and it hurts but all in all we are doing well. He has always been back and forth about having kids (for the entire time we have been together). But after all of this he told me he was ready to have kids but since what happened he doesn't know if he wants to have them now. I understand his point for the most part because you can never be too sure about what will happen after all the betrayal. But sometimes I think he just said that to make me feel bad about what happened and try to get back at me because he knows I want kids. Question: Which reason do you think he said it for? And do you think he will change his mind? To anyone who has had affairs in their marriage and stayed together....how long does it normally take to get over it if you otherwise have a healthy relationship?