I am just kind of jumping off this post as far as the way Jeremy "acts". Some people here find him to be "off" or strange, or whatever. In fact I beilieve someone said he should "buy a personality" which I thought was very offensive and rude.
Now this is obviously just my opinon, I don't know Jeremy, so I am just basing this off of what I have seen. My husband has mannerisms, etc. which are very similar to what I have seen of Jeremy. My hubby is very very shy. He feels very uncomfortable with any kind of attention directed at him. He really doesn't have very good social skills so he doesn't speak unless he HAS to. This also extends into how he shows emotion. He doesn't, at least not in public. It doesn't mean he doesn't HAVE emotions or that he is some kind of sociopath or weirdo, it is just how he is. I think it is most likely a combination of extreme shyness and partly because this is how he was raised, men are not supposed to show their feelings.
I am very outgoing. I will talk to just about anyone, and I have no problems expressing my opinion or views. When we go somewhere, pretty much anywhere, my husband always says, "Ok, you are going to do all the talking, right?" He WANTS me to do all the talking. I guess because he is afraid he will say the wrong thing or make himself look foolish, or something. He is perfectly happy to sit there not saying a word.
Now, this does NOT mean that I "wear the pants" in the family ( I actually find this term offensive, but whatever). We make decisons together, if he has a problem with something then he tells me. If there is something that we know is his "area of expertise" then he handles it (computer stuff, etc.) But just because I have a "stronger" personality doesn't mean he exists like a bump on a log and does nothing and I call all the shots. It is just his personality.
And yes, as far as the showng emotions thing goes, even when my daughter passed away my hubby showed no emotion whatsoever in front of other people. He cried at home, in front of me, but even at the funeral he was very stoic and just had a frozen expression on his face. I think Jeremy acts like this because it is just HIS personality.
And all of this long rant is just my opinion.