Possible sex addiction, most likely typical horny youngster.
Not judging your life choices, but perhaps not a good idea to have multiple sexual partners on the go. Ya'know, diseases and such like. They generally tell you this in high school.
As for guys only wanting to be your friend for sex; if it's established that most of your current guy friends are "friends with benefits", then I'm not surprised there are other men wanting to get friendly with you. They probably assume you're an easy lay.
Sex is great, but self-love is an alternative and might be something you should consider practicing. Also, sex toys. Wait until you find a solid sexual partner, maybe even a relationship, and you'll probably find things get 10x better. Also, abstaining from anything sexual will probably give you the energy to pursue other things AND make your eventual next time mind-blowing.