My DS2 & DS3's dad has dxd Autism. He was dxd when he was 12. I didn't find out until I was already in love with him. It HAS caused massive issues in our relationship, we have been on and off and on and off more times than I can count in the last 14 years.
We split up yet again when DS3 was just 4mo. Or rather, after a period of complete meltdown from him, being unable to cope with the changes in our family routine that came from having a new baby, HE walked out and left after leaving me to do absolutely everything for the entire family and house.
We are tentatively trying again, but we have both come to the realisation that we just CANNOT live in the same house.
He now lives in a room in a shared house where everyone living there has Autism. The next door neighbour is a Carer for them. (Not an organised 'home' for adults with Autism, they've just all gravitated there!)
Things work much better for him if he can come round on Tuesday, Thursday and Sunday, then get space and his own routines the rest of the time.
It took a MASSIVE shift in me mentally to be able to accept this rather non-traditional family set-up. But as daft as it sounds, for all he has put me through, I still love him. I had a choice - be without him forever, or accept that we will never be able to live together.
We've been trying again since just before Christmas, and it is working OK except when I get PMT, or TNT as he calls it...