hi again kelli,
i know it can be hard when the people closest to you aren't cheering you on the way you hoped they would.
when i started this weight loss journey, some of my friends were very concerned (some in supportive ways, some not). they were just trying to protect me because i've struggled with my eating habits in the past. i've reassured them that this time i'm going to get to a healthy weight a healthy way. it may be that your friend and boyfriend are feeling protective of you and want you to feel that you're great just the way you are right now.
this can be good but also frustrating i know...
if your boyfriend doesn't think you need to lose weight, it would be easy enough to say you've committed to a healthier lifestyle (like you mentioned in your second post)...something like that. i'm lucky to have a very supportive boyfriend when it comes to me being healthy, but like your bf, i haven't told him about 3fc because he'd probably also think it was silly. i have told him that i've found some great advice, motivation and correspondence on the internet...
as far as your friend goes, obviously i don't know her and i can't know for sure, but i think your prediction is right--she doesn't want to be left behind and is getting a little preemptively jealous of your fitter future. even if she doesn't want to join you in your dieting or in all your workouts, maybe see if there are things she would like to do--take a hike on a saturday, go for a bike ride to see a movie instead of driving...something like that? if she's afraid of being left behind, see if you can take her with you
i was glad to come across this post of yours, hopefully we can get to know each other better over time.
i wish you the best of luck and let us know how it goes as time goes on...
ella
p.s. feel free to pm (private message) me anytime!