Remember they are phases, and they don't/won't last forever. And surely hurting your parents (at the very least) is enough? It means someone loves you, which means you need to be alive Love is complicated, it's just one more hassle.
I think some people's physical age is higher than the mental one. Like, a 30 year old may act and feel like a 17 year old. It's a grey area. And it's best if it stays a crush. Or they might get into a lot of trouble.
It's a body part. Like a kidney. It isn't meant to be sexy. It IS however, meant to be able to sing a Medley of Spice Girls songs backwards. In japanese.
I was the same, and indeed still am. I'm guessing your bi by what you've said. But the most important thing is (and is something I'm trying to do myself), don't feel you need to label yourself as anything. You aren't a tin can
You might have a fairly nasty battle on your hands now. I cut myself constantly for about 8 months and I'm scarred all over. Are you seeing anyone for some help? If not, i suggest talking to someone before it becomes not just once, but something you think about constantly. There are more negatives to it than positives.