Sexual orientation

Hi :) so I’m 20 years old and through high school I never felt 100% Heterosexual, but I didn’t act on it or experiment. Now that I am older I am trying new things and want to explore and determine what exactly I am feeling. I do not know where to begin nor want to offend anyone along the way. I believe I am bisexual but I have only been with men romantically and sexually. I know for a fact I can romantically be with a woman and am attracted to women with manly features but also have feminine pretty features if that makes any sense? So I always just figured bc I like girls who are manlier that I was hetero. I have kissed girls before and I don’t mind it. I could use some insight on what steps to take to understand myself. I know I do not need a title for my sexuality but I do want to explore and understand exactly what I am?