Is this bad?

Hey so I am a teenager, and I don’t think sex is such a sacred thing. I don’t think its this big event. I am very very inexperienced but I know that it’s not a big deal for me. I don’t care about virginity or number of people, I just don’t think it matters. I want to be able to express my sexuality without being called a whore or a slut. Honestly I don’t even think being called that would bother me too much. I like to wear outfits that my mom calls “trashy” like short shorts or crop tops, but I don’t see anything wrong with it at all. She says that people will think things about me, but I don’t even think about anything like that when I dress the way I do. It just doesn’t come to mind because I don’t see anything wrong with it. And to top it off, I really want to fuck this guy.... and I probably shouldn’t because it’s “wrong” but I feel like I am ready. For a while I thought I was, but now I know I was wrong, but recently I have felt 100% ready. What should I do? Is it wrong to feel this way?