I can't take it anymore

Sounds like you could do with some help offline. Maybe trying to make new friends in real life would solve the issue of you having to rely on your friends online.
It's not an easy process, but once you find a group of people you enjoy being around, who accept you for you, you'll have more incentive to go out at the weekends and enjoy yourself. Hence, giving you something to look forward to and keeping your mood quite happy.
I doubt people online are bored of you, maybe that's just slight paranoyer - Thinking you've found somewhere to fit in, but now you're cautious they'll get bored because you're always there.
As for your family, I'd try addressing the problem face to face in a civilised way. When your family tease you about liking somebody, they don't mean to make you feel bad, they're only embarrassing you which alot of parents find amusing.

I hope some of this helps and I'm sorry if it doesn't.

-Laura.

I know how this is. I go up and down all the time. One moment I'm happy then the next.....I just start thinking about all the crap that has gone on in my life lately. I'm sure there are many people that care for u offline. You just need to get out there and find them. *hug*

xoxo
Kayla