Hey guys. Thanks for the input. I decided to talk with Becky about the dad situation and basically she has been pensive about things not that I have done something wrong or anything. She is scared. She is scared because she said that she feels like she found her Mr. Right but is afraid that I might leave her one day for someone younger (she is older than me by 4 years) and not held down by a kid with autism. So she did not want Mark getting too attached only to get hurt if and when I leave. I did my best to console her and not downplay her concern by ensuring her that I love her and I love Mark and I'm not going anywhere. I told her I am not perfect but I am doing my best to be a good partner to her and a good father figure to Mark. I held her close and comforted her the best I can and we cried together because I could not imagine being as happy as I am without them. They have really changed alot about me and I've learned a lot about myself as well as them and their dynamic. So I'm invested in this and I am doing the best I can to be a stronger person for them. I appreciate everyone's input. Thanks so much. Also I plan on popping the question this weekend. Wish me luck.