I'll have to agree with Sophiesmom. It's understandable to have a want to have sex at your age. Your hormones are raging. But young people your age do not have the tools to emotionally deal with these feelings much less multiple partners and alternative sexual activities. I'll not go as far as to say that it is "weird". I'd never say that to someone who is still trying to figure things out. But I will say that I think it is dangerous. Dangerous to your physical. mental and emotional status.
You have so much living left in front of you. Slow down. You are smart or you wouldn't be here asking about this stuff. You don't need to experince everything out there before your 18th birthday.