PLZ HELP AT LEAST HAVE A LOOK AT THIS!!!!?

ok at school i have been bff's with this girl we were in a group of 5 one girl leaft and the this year i found this other new girl pretty cool so i asked if she wanted to sit with us me and my bff were always bff throughout this whole thing until the group split in 2 it was me my bff and the new girl and the other 2 went of at first i thought it was awesome and they were both in the same classes and i am in different i invited the new girl around once and then the 3 of us 4 a big sleepoever they r now ( i recon) starting to get more close and they took up an activity inside of school together (which i couldnt do) and now at lunch sometimes i feela bit left out cause they r always talking about wat happened in class and i just really dont want them going of and being bff's and leaving me mmy bff said at lunch omg i should really get ur nu,ber down then i can call u write in front of my face but this is not exactily the problem well this weekend is a long weekend and me and my bff are having a sleepover on friday night and my family is going to their house for dinner on saturday night then i have got a sleepover on sunda night with one of my friends from my old school and the new girl said we should catch up again i really want it to be at my house so they cant leave me alone they were saying saturday but im not sure if my parents will allow this whole weekend to be spent with friends and besides lets remember its the 3 of us wat should i do!!!!!!!!!!!??????????? can u try and help me with all of the problems plz thanx :)