<human>: Hi, everyone.

I seem to have a knack for coming across as creepy or weird when dealing with strangers (and sometimes friends).  I'm not entirely sure why, though.

For example, today I went into a bookstore.  When I went to the register, the cashier literally said nothing to me except the total amount of the purchase.  She was all smiles & chatting with the people before & after me, though.

My coworkers at various jobs have also called me "the quiet one who is going to snap and kill us all one day."  I'd like to think it's all in jest, but it's been to the point that two co-workers at my last job dove under their desks after I got pranked at the office.

For background, I am the tall, nerdly sort of guy.  Generally found wearing a T-shirt referencing Tron, Cthulhu, or something else of interest to us all when I'm off-duty.  Married to a wonderful woman who assures me I'm not as creepy as a lot of people insinuate.

Although ever since I got married, a semi-related phenomenon has started in.  I got absolutely no flirting and very little interest from women before my wife, usually getting friend-zoned quickly and decisively.  Since getting married, though, I've found myself flirted with (and propositioned once or twice) by several women (and a couple guys).  I would have thought the whole wedding ring thing would discourage, rather than encourage.

So, Reddit, how do I not come across as creepy?  And how do I make sense of people hitting on me only now that I'm married?

Can you give me a shortened version of the text?
<bot>: A lot of people treat me like they think I'm going to kill them.  Except the ones that suddenly find me attractive now that I'm off the market.