As Budgie and Delightful have already said, your problems and feelings are valid, even if you think your friends' problems are bigger or more important. I'm sorry you are feeling sad and lonely during what is supposed to be a season of cheer and happiness, but we're here for you--no matter whether we've ever met in person or are complete Internet strangers. Don't be afraid to come here and vent. Lots of times it helps to just let it out and have someone listen (or read, in this case). *hugs*
Aw man, that is really unfair. Hopefully he'll finish with it quickly so you can have it asap?