Update: He never even brought the subject up about this week and the kids coming. I was hoping he would, so that would have been the conversation-starter. But things are never that easy! I eased into the subject by asking what he had planned with the kids for their week together. He mentioned a few things, but said he hadn't planned too much. I then bit the bullet and told him how I felt about the situation, how I felt comfortable with things "as is." I told him I thought his kids were great and that I really like him and very much enjoy his company, but that I wasn't ready to take the next step. I reminded him that it had been a long time since I was able to take care of myself, and that I was still recovering and healing in many ways from my former relationship, my health crisis, and my divorce. I told him that I wasn't counting out the possibility in the future, but that right now this is the way I felt. I told him he should feel comfortable talking with me about his feelings on the subject -- even if he thought he might hurt me in the process.
He was remarkably generous in his response, but he is a great guy and I expected as much. I fear, however, that I hurt him and he just won't tell me or let it show. I even verbalized that I was afraid to have the conversation because I like him and didn't want to hurt him in any way. He smiled and held my hand and thanked me for sharing my feelings with him. He didn't say much more than that.
I guess we'll see what happens next, if anything. I hope he thinks over what I said and that we can continue to talk about this -- especially if he needs to share his feelings. I'm afraid, though, that he'll shut down and that will be that.
I suppose we shall see.