<human>: Can you give me the gist of the text in a nutshell?

I recently landed my first proper job in my field, meaning my wife and I moved a couple of hours away from family and friends. Apart from my awesome, supportive wife still being bored (and a little lonely) while looking for a job, everything has been going really well so far. I'm part of a small team (five people in our office, split between two rooms) and I get along really well with everyone, which I'm stoked about.

Recently however I have noticed one of my co-workers has become what I consider overly affectionate with me. We have spent a little bit of time talking somewhat personally about her family life (nothing about her marriage, just life with young kids, but still things that she hasn't told other people in the office) and just generally enjoy chatting and laughing during work. Now she will drop in to talk to me a couple of times throughout the day, and she seems to always find a reason to make physical contact with me.

It's just seemingly innocuous things like a hand on the shoulder (if I'm sitting), a poke, random things like that. But it's all new behaviour and I don't see her doing it with any of the other male employees. For example, today she threw a screwed-up ball of paper at me for no reason while walking past.

When I write it down it feels like I'm making something out of nothing haha so I don't want to mention it to anyone in case I'm just being a conceited idiot, but what do you guys think? Does this sound like something I need to look out for, or mention to my wife? I don't want to give my co-worker the wrong impression but I also don't want to screw up a good working relationship over nothing. Should I just consider myself lucky to have landed a sweet job with fun colleagues?
<bot>: One of my co-workers has recently (over the last two to three weeks) become more affectionate and even, in my eyes, flirty and I don't know what to do about it, if anything.