What could be the reasons why my friends are calling me a girl when i'm not one?

I don't get it why my friends in my high school are calling me a girl when i am really not one. I was walking to my car yesterday with my friends when my friend ryan said to my other friend dominick if he was hungout with any girls in our school, and our friend dominick replied, well yeah this girl and the pointed at me and I got so embared that my cheeks turned a little red. I don't know if it because of these reasons that they call me this, I usually hangout with a group of girls and I'm the only guy. The girls like to talk to me a lot and the girls always wear beautiful clothing to school like either a dress or skinny jeans pants with a cute shirt and heels to school. Sometimes the girls ask me if they think i look nice, I always replied you like really nice today and i always comment on their shoes like, I think you're heels or shoes are nice and they make you look cute. Sometimes I say I like your heels and they would reply thanks. The girls would always talk about fashion with me and they know that I am straight. I also admire girl's fashion and I'm thinking about becoming a fashion designer someday. Sometimes when the girls buy a new pair of heels and they would ask me if they look nice and they would take the shoes off their feet and hand it to me and ask for my opinion. I even once tried on one of the girl's heels because her shoe size was exactly mine shoe size too, I just did for curiosity. I got a lot of people at my school who loves me and they are like all over me in the hallways giving me handshakes all the time. I don't know if my interest in girl's fashion industry has gotten me into trouble becaue there are wierd things happening. Because there is now this gay guy who is flirting with me and he brought to school and gave me a pair of heels which i didn't take. My friends are calling me an asian girl princess because i am asian now, even my friends call me an asian princess, I know that sounds so gay. I mean I'm only intrested in fashion and fashion designing for girls and I would never wear the clothing and shoes. How come they are calling me an girl when I'm not one ??? I'm 17 years old and I have a very bad temper when they tease me. Why can't guys be into girl's fashion even when they are straight without being called a girl or a gay??