Confused

Okay so I have dated guys before but I never felt comfortable with them now I’m with a female and I feel really comfortable I can do anything,say anything basically be myself many people thinks I am a lesbian and I just agree because of course I’m dating a female

But at the same time they also think it’s a phase and I’m really confused because growing up I never really knew what LGBTQIA was don’t get me wrong I knew there’s people that like a significant other with same sex but I never really got to learn about them or know anything about them so I’m confused if I’m straight,lesbian or bi I need help