I think when your bigger, you seem to gravitate to other big people as friends ... so whehter its jealousy or just that your becoming different then them , they tend to pull away. I had a gf that said that since i lost weight i think im better then everyone else and i talk and act different and wanted nothing more to do with me... my true friends told me that the only way im different is that im more willing to be outgoing and im more confident. Probally bc she was unwilling to be that way.. it intimidated her, all that on top of jealousy.... ended that friendship. It sucks but you gotta think its all for the better, because if thats how they want to be, they werent a true friend anyway. True friends support you no matter what or how you change.