Thank you for sharing...
I want to encourage you to listen to yourself... "two-faced friends" are not friends...
I like your idea of talking with a few you feel you can trust to care...
Choose the few you feel you can be honest with and share that one of your imperfections is struggling with depression... then, ask if they can be okay with your not 'being fun.' Maybe some of them can figure out with you things to do that meet both of your needs? movies? walks? museums? a class?
No one can 'be fun' on demand... maybe you will find that admitting to depression is a good thing? I admitted it to a neighbor recently, while on a walk... it brought us closer... she shared that she is an extreme introvert and isolates simply due to that... we now walk together now and then, and do not expect to "have fun."
Other friends may actually not care if you're feeling up around them...they may just be happy to help you get out now and then...and without feeling sorry for you...
you never know until you try.
I am now inspired to share about my own struggles with a few more friends...jist because of your share! Thank you!

Chloe