Background info:

Been with this girl for a year now. Her love for me has only increased. I like her a lot, since she does a lot for me and really wants to make me happy. she paints for me, cooks, and will always listen. She is 18 and I am 20. I am her first. We were both raised conservatively by South Asian families. This also means, culturally she expects to marry me. and isn't the type to consider cheating and leaving since she would loose her family and everything. Its really bad to have more than one partner for girls in this culture. I live in a western country and finding girls like this are rare and are my type. Ive only met a few. I have been with a few other white girls and whatnot but I couldn't consider any of them or ever will consider non south asians for ltr. Just wont match up with my life goals. my ltr knows about my previous girls.

I have the abundance mindset with girls but not with ltrs. I get along really well with this girl and she is pretty good. she's not dumb either which is rare for women too.

Problem is her family. she loves and respects them all. She loves her mum completely. Her dad she loves but because he cheated on her mum, gf has problem trusting men. But i won her over. she calls her parents very often. (we are at uni) Her brother though, this is my actual issue...

Is non verbal autistic. Now my gf and I are both mildly autistic, a few traits here and there, I had diagnosis and similar for other things and this was mentioned.

I don't want to have to deal with her brother. Im hoping that as time goes on, her mum will just keep looking after him because he'll probably get another 30 years and need help with everything. hes just a big baby. I dont want his care to ever be put in my hands. Im talking 20 years in the future in an emergency or something. I just dont want it.

If I don't ever have to look after this brother, and only have to see him when I visit her parents I will be happy. Not sure if its worth it.

Now I read trp but Im not a fan of the cheating mentality. I understand that shes still a girl. Yes. There are less options for me as my circumstances were explained in the background paragraph. I may not find another compatible south asian conservative freshie. I want a family and kids. I will not start one with a girl who has had anyone but me