She flirted with me but have a boyfriend?

[Anonymous]

There’s this girl at school before holidays vacations she seemed to be into me like she was teasing me/flirting with me, but now today I have learn that she have a boyfriend, why she flirted with me then?

[Billlewis]

I think this actually happens quite frequently, and it can be for one of several reasons -- either she's attracted to you and may be considering trying to seduce you, she may just enjoy teasing a guy and leading him on without allowing him to be intimate with her, or a relatively new phenomenon that's becoming increasingly popular -- flirting and teasing a guy, solely for the purpose of material or financial gain, and then sharing the proceeds from the encounter with her boyfriend.

[Asker]

So she likes me even thought she has a boyfriend.. because I have caught feelings for her but I feel kind of feel bad after learning that she taken lol