Why do girls who have a boyfriend do this?

Anonymous
I work with this dude and a girl. The girl is very attractive and the guy seems to be attractive as well and he seems to be like a dude liked by many girls in the office. I am more reserved and quiet. So the girl I like seems to be always flirting with that dude. I mean they constantly flirt, joke around with eachother, and she always teases him and he teases her. Thing is, I once walked in on a conversation she had with a girl co-worker about her boyfriend.
So she has a boyfriend but constantly has flirtatious banters with this dude.
How is this normal?
Why do girls who have a boyfriend do this?
2
1
Add Opinion