Our DS (2 years, 2 months) has a preliminary diagnosis of ASD.
I've come for a bit of sympathy, I suppose, and practical tips, should you have any.
We've just had another disastrous play date at home. A sweet, quiet boy with similar interest to DS came over with his Mum. DS spent the whole time in tears and was basically inconsolable. He seems to consider play dates at home an invasion.
Play dates at other people's houses can go better, depending on his mood. Some times (not often) he will settle and play (in parallel). Some times he hangs on to the door frame so I can't even go into the house and we just have to turn around and go home.
Our paediatrician says that we should be challenging DS socially (gently) and I can see that he needs to experience this kind of set up so I can begin to teach him the rules of social engagement, but it feels so unproductive 80% of the time. He is just upset and not learning anything.
It will pass, but right now I'm despairing of being able to do the right thing by DS or of managing to get any social interaction myself!