I'm going to be straight up and admit that I really don't know too much about this, but I've been noticing things about my partner that is making me wonder if he has aspergers.
When I first met him I thought he was just extremely shy. I found it very hard to talk to him and he also seemed to have difficulty looking at me. I have social anxiety so I mostly thought it was me making the situation a little awkward. When he talks to people other than close friends and family he has difficulty talking to them. They will ask him questions and he will answer them (usually with a yes or no response) and then look away. The first time I saw this happen he was around my family but then I saw him with his own family and he was still doing it. His body language shuts down conversations. He will look away from them or even turn his whole face away and it seems like he just doesn't like the person he's talking to. He's told me before that he just doesn't know how to act in situations like that and feels really guilty that he can't talk back no matter how much he wants to.
I also noticed very quickly that he seemed to take everything very literally. When I would joke he would argue with me and almost give a lecture on why my joke wasn't possible. At one point we had an argument about something and I told him that he 'threw me under the bus' and he got really upset about that. He told me that there was never a time where he had ever attempted to throw me under a bus and would never try to hurt me like that. I told him that I didn't mean it literally and he said "Oh well that doesn't make sense then, why did you say it?". He does this in nearly every conversation we have and it can often turn into an argument. He also gets rather upset when people greet him saying "Hi, how are you?" at work and then just walk off. He doesn't understand why people ask you questions without waiting for you to answer. He also doesn't know if he should follow them to respond or just let them go. He just gets really confused with things like that.
I don't know if this has anything to do with aspergers or not but he doesn't seem to understand that just because he likes or dislikes something doesn't mean that other people have to have the same opinion as him. The same goes with knowledge, he thinks if he knows something then everyone else should know it as well. He's really good with maths and scientific things, where I have great difficulty with maths and most science subjects but am really good with arty things. If I don't know how to do a math equation or whatever he will get quite angry at me and nothing I say will make him understand that it's just not an area that I'm good in. He thinks that I should naturally know square roots of numbers easily and know all of the numbers in pi or whatever it is. This happens with everything that he have different opinions on, even T.V shows can become an argument because he likes/doesn't like it and everyone else should feel the same way.
I understand that no one other than a professional can diagnose him but all these things make me wonder if he may have this and so I was just wondering what other people thought.