Rebekah
First remember that there's a difference between falling in love and having feelings for someone. You know this, I just don't know if you accept it. And also, you're always alone, but you don't accept that. You still want someone. And you know, that's okay. But you need to accept your worth before anyone else can be let in.
For the record, Kenzi and Lois have the right idea. Go out, dance, flirt, maybe have a fling. Enjoy yourself because dammit you're allowed to and your brothers don't get a say in the matter. You've lived entire lifetimes, but what you need is to live them for you .
You're brilliant. You're beautiful. The right guy will come along. Till then...be you. And have fun being her.