Not really a reason other than the Doc told me early on she has no desire to date without the intention of getting married.
If she is doing that then I have not picked up on it yet. It has not been obvious but I also don't know how she has treated any of her other romantic partners. I just think she knows that I am a catch and feels very lucky to have me in her life. I have what she places value on and doesn't want to lose it. While she does treat me very well she is not telling me how much she loves me every 5 seconds and just waiting on my every need.
I think if we had moved quick and the kids were acting like they are now we would both be doing some pretzeling.
I did some Google searches today on it and do see some tendencies however if he has been diagnosed the Doc has not mentioned it to me. We haven't really spoke about it much but I think she realizes now that the kids are not ready.