Need to figure it out

Im 19 m straight and I’m very curious about whether I like dick or not, I get aroused thinking bout sucking one or getting it in the ass but when I have the chance to, I always chicken out, I’m always flirting with men and showing them my assI even talk to a female about allowing her to put a strap on in my ass and I’m so horny everytime we flirt like that, I love having a finger in it when I do it myself and just feel like I need to figure myself out and stop being scared..Any advice?