Married in silence

I have been married to my partner for 18 years and we have 3 children.  My partner has always been interested in gaming more so than me and we went on holiday and he bought a new camera and spent hours staring at it, playing with it and even took it to the dinner table with him.  He gets extremely stressed in certain situations to the point he takes it out on  me.  We only figures out he was autistic after having an autistic child.  He has got worse as our relationship has gone on...mainly though realising he is autistic.  He is kind, never goes out, always at home, but he lacks natural affection, somedays I feel very alone as he fails to talk more than 10 sentences in a day.   I wonder what it is like to be with someone that shows interest in me and chats to me.