They are stupid no good sluts~!?

UGH ok, so i was talking to a couple of my friends a couple minutes ago and they were giggling like crazy so i asked them what was so funny, and they said "well, we went to the beach today with all the boys, and we kissed brett (the boy i have a super huge crush on) like a bajillian times! and then _____ and ____ were makeing out and so me and brett started making out, and then we switched" ( meaning ____- went and kissed brett and ____ went and kissed the other boy) and i'm really mad because they know i like him! they are only 12 and they already had sex! i really want to say something to them but i dont want to get in trouble. =( . so, what i need is ways to make me look prettier. i have curly, shoulder length hair, its blonde, blue green eyes, huge eyelashes that i am VERY proud of lol, and i'm really short with no boobs =(.i pluck my eyebrows and i shave and stuff, i usually put my hair in the bump it poof thing or i leave my bang down and clip it back. i have a red highlight. ummm, i usually wear lip gloss, but i dont wear eyeliner because =O i am one of the few girls who don't know how to put it on. i have my ears peirced. sooo any tips would be cool. anything to say to the little slut bags would be cool too. thanks