Why is she doing it?

She’s jealous of you and is trying to get you upset in some way by making fun of you. This is high school drama. Ignore her.

Or if you’re into it, copy HER, and make fun of her, although it could backfire.. Whatever you do, don’t show you’re upset by her actions. This has potential to turn into bullying.

Perhaps he commented about you to her.

@snowberry And I thought that high school dramas had no place in universities… Thank you for your answer. Actually she is not copying me in a funny way. She has altered her behavior in a way that looks like mine. She also dresses like me and does the same makeup like me.

@marinelife this is actually a good thought but what could he comment? Wouldn’t it be risky for his relationship?

@dina_didi Sorry, you didn’t make any mention of this being in college. Still, it sounds like high school drama. Do what you want with my suggestions. They still stand.

@snowberry Yes your advice was helpful

Maybe she likes both of you?

Any number of possibilities exist. Perhaps your ex is constantly comparing her to you. She feels insecure so she’s trying to be like you. The only way you’ll know is to ask, if you really want to know.

That’s my guess as well, that they have had a conversation about ex’es and he’s told her what he liked best about you, what he missed most, etc. If it was mutual (she told him the same things about her ex, then it would not have seemed a risk to the relationship.

Or, as @marinelife implies, perhaps he’s judgmental of her, saying things like, “Dina never slopped around the house in baggy sweatshirts.”

A few years back, when I first starting going out with my boyfriend, he would talk non-stop about me to his insecure older sister who had no sense of fashion and had buck teeth. Eventually, I noticed that she was copying me. She would ask my boyfriend where I bought my clothes, where I went to do my hair, what I did to my hair, and it seemed she tried to buy similar clothing, jewelry, accessories, shoes, she dyed her hair my color, and ultimately tried to be and look like me.. It was very creepy, and my boyfriend also got so creeped out that he stopped talking about me to her altogether.

Maybe she likes your style. Maybe she’s going into a phase where she’s in search of a whole new wardrobe, and your style is her ideal style, so that’s where she’s looking. Maybe it’s a compliment, :P

Start dressing and acting like she was normally. Maybe it will get her back to her old self.

The thing that makes me wonder why they could talk about me is that we were not in a relationship. We were (not close) friends. There was some discreet flirting but not something clear.
@josie is “she” a typo or you are suggesting she might be bysexual?