TeenHealthFX knows that being treated poorly by people who are supposed to be your friends can really be hurtful. You cannot allow these boys to physically hurt you or tease you. If you feel comfortable, let them know that you will not accept this treatment from them. If not, let an a trusted adult (like your parents, their parents, or a guidance counselor) know about their unacceptable behavior.
Even though losing four best friends would be devastating, the stress that you are feeling from the way they behave is very unhealthy. Distancing yourself may help them to realize what a good friend you are, and they may begin to feel bad about how they have treated you in the past. Try to develop friendships with other classmates, or seek out new relationships by joining a club, sport, or activity. It is often easier to make friends with those who you share interests with. Make sure that you do not isolate yourself or get in the habit of playing video games or watching television instead of hanging out with classmates or friends.
It is difficult when you determine that your close friends are not necessarily the BEST friends for you to be hanging out with, but surrounding yourself with positive people who care about you will help you to develop strong long-lasting friendships with people who truly want to be your friend. Read "Qualities of Friends" and "My Best Friend and I are On The Rocks" to learn more about friendships.