Is it wrong or weird to want to mess around with someone who is autistic?

Let me explain. On a trip to the UK, I made friends with a guy who was on the tour with me. Found out he lives about an hour and a half away so we stayed in contact. From the start I told him that I was bi and he said that he never tried guys but was willing to experiment. We talked off and on here and there made plans to meet up, never did but this past Thanksgiving he invited himself over and I let him stay the night. Fast forward to this week, he asked if we can hang out next month. I hit him with a playful message about getting in his pants and how he's scared and he drops this line on me, " well.. i keep saying that sexuality in on a spectrum. u know i have autusm right". Now I had no idea, he's still a cool dude and if he's serious about that he's very high functioning. Should I still be trying to get in his pants?