Advice about a flirty married female co worker

I need some advice about my co worker. she married with 2 kids and haven't been at work that long. at first didnt really talk to her, but once in awhile some small talk. then she started with putting stuff on my desk and computer. then she started with the rubberband shootings. since then we been going back and forth on email most of the day. she says I fun to mess with and pass the time by. after month or so her hubby was showing up to work to take her to lunch everyday. and he calls and text her throughout the day. along with everything else she calls me out in front of people at work, says smart comments, and the stares and smiles. recently we leave at the same time for lunch and the other day we ended up just talking. she have said she has a flirty personality but would ever step out on her marriage. so is all this for attention or what?