Why would a girl keep heavily flirting with another guy but still stay with her boyfriend?

[Anonymous]

You probably want to know what I mean by heavily flirting?
Constantly teasing each other, touching eachother playfully, flirting with gifs in texts, giggling with eachother all the time, playful banter all the time. She also gets very territorial and jealous when other girls flirt with him.

She has a boyfriend but does all this. Why is she with him?

[Anonymous]

looks like monkey branching to me. As soon as she realizes the other guy really likes her, she will let go of her boyfriend.
where is the loyalty?

[The-Wise-Phoenix]

One word.
(Validation).
Validation from men is like a drug to most women. It makes her feel good that other men are attracted to her.

[Ekvark]

Sounds like a controlling and validation addict