Confused + scared about sexuality

Hey, Reddit. I'm a teenage guy with a lot of confusion. About two years ago I realized that I had feelings for other guys and it was really difficult coming to terms with it. As I became more comfortable with myself, I labelled myself as bisexual and I've come out to quite a few of my friends, all of whom have been very supportive and accepting. But now I'm starting to think that I'm gay. I don't get turned on by women even when I watch porn. I'm starting to think that it was easier to tell myself that I liked both genders because at least I was half-way "normal". I'm really confused and scared because I feel like my world is going to change if I'm gay and have to come out a second time. My family doesn't know and I go to a private Catholic school so I'm terrified of really coming out to everyone. I could really use some advice and support because I don't have anyone to reach out to on this subject. Thanks.