Would you say that I'm bi/bi-curious or straight?

I'm in my early 20's and have had 2 insignificant high school boyfriends and one current long term boyfriend. I haven't dated a girl before but I would not be opposed. When my boyfriend and I are at a point in our relationship where we are both comfortable, I would even be open to having a third sexual partner, boy or girl. Before I met my current boyfriend, I did swipe on both girls and boys for dating apps but was always intimidated to meet up with girls since I haven't been with one before. I get super annoyed when my sisters, both bi, label me as straight. If anything, I consider myself to be bi or at the very least, bi-curious.