Okay brief history before I start question.

I started dating my boyfriend in April 4th 2016 in high school second semester. We had 2 classes together that semester. We both are autistic, I am level 1 autistic with severe math deficiency and learning disability with slight speech problem. He is autistic and has Asperger's syndrome. Our third year is coming up here soon. We've talked about how we want to do the deed but I'm religious and we wait till marriage and he understands and respects that and us being virgins, we were nervous talking about is since we both knew fully well that we wanted to do it. Well I've been thinking about it even more and also with marriage now too. I Sunday just became an aunt ( my 18 year old brother's child) and I've given hints by saying something about how soon my brother and his girlfriend will be getting married soon and how I've never thought of the day that my first younger brother has a child and will be getting married soon way before I will. And my boyfriend asked if I was asking him to pop the question, and I've asked him several times catching him off guard about his views on marriage, but I didn't want to scare him so I said not exactly unless if you want it to be then yeah. I'm just trying to keep him comfortable and all. But I do want to have a life with him but there are so many road blocks like: we don't have jobs, we have our conditions, he had last year in mid October moved to texas with him mom to take care of really sick(dying) grandma or great grandma can't remember exactly, and we don't see each other due to distance and $. But I really want him to pop the question and i want to give him the deed. I do want to visit him for our third year anniversary and I'm trying to come up with money and figuring where I will be staying, how I will get there and how i will get away for a week from babysitting my 1 year old baby brother. What should i do? Should I have him to pop the question?