Bullied about weight? Need help!?

So I'm 15. Currently on summer before Sopre year. I have some issues... mainly involving my self esteem. I know it sounds weird because I have self confidence, like I'm outgoing with my friends and dance team and stuff like that but when it comes to guys and new friends, that's a whole other story. I was bullied constantly from 3rd grade until today about my weight. No I'm not fat, in fact, I'm the opposite. I'm super skinny. The boys would always say "here comes the walking stick" or "she's anorexic" (I'm not, don't worry). At first I would go home and cry to my mum and she would try her best to comfort me but the pain still hurt like knives in my gut. Through middle school I acted like it didn't bother me, the bullying or remarks about my skinniness. But its just something I have always been self conscious about and people just keep pointing it out. Within the last month a guy whispered to my friend, "Feed Olivia" and then I cracked. I can't take all these remarks from people, especially boys, the ones who I am trying to build relationships with, friendships and romance. I seriously don't know how much more of this I can take. I have always been naturally skinny and I just broke 100 lbs. a couple of months ago. My question is how can I heal my wounds from childhood and teenage years from the bullying and become more comfortable with myself? DO NOT SAY I'M LUCKY FOR BEING SKINNY. I understand girls and boys starve themselves and do awful things to be like me but I have been through too much to want to stay like this.