Maybe he is peeking a little bit....but I think you are wise to not appear eager.
You know, it is interesting what you said about being thrilled if your H would have done, or would do with you some of the things he has done with OW. My H and I did do a lot of things together, and now I think he is doing the same kind of things with her. Goes to your "been replaced" comment as well.
Do you think your attraction to crushee is based on loneliness?