When I first read the bit where you said "I feel like I've lost two near and dear loves to me this week, and I'm crashing and burning on the heartbreak right now", I immediately thought that they'd died. So, the short answer is that they're not dead, they're still with you, so you haven't lost them completely. Very simplistic way of looking at it, but at least you've not lost them *forever* forever.
Less simplistically...
Your sister is at the same delightful age as my brother, while both of us are on the upper side of it (I'm 21). So you know for yourself, as I know for myself, that no matter what you were like when you were that age, you're certainly not like that now (at least, you don't
sound like an egocentric anti-social teen
). So if
you're a perfectly humane person, and
I'm a perfectly humane person (I think
), and
most people are perfectly humane when they become de-teened, then there is hope for our teened siblings. If she's your sister and she cared about you before, then I doubt very much that you'll have lost her forever. She may take a little while to come around - remember, she's coping with an out big brother
as well as her uncontrollably-fluctuating hormones (female hormones are not fun during adolescence, trust me) - but as I said, that
will end, and when it does, she'll probably be as lovely as she was before. So while I cannot *absolutely* promise that everything will be as it once was, it is *highly likely* that she will be her old self again soon. (She may also have just been having a particularly bad day for some other reason. Horrible coincidences do happen, unfortunately).
Where your friend is concerned, I can fully empathise with your inexperience, but don't have any good advice, sorry.
I honestly don't know what to suggest. Maybe talk to your therapist sometime soon about it? If anyone's likely to have helpful advice, they will.
As for your parents and tomorrow, have you actually considered that you *won't* lose them? You seem absolutely certain that you will, but that's really not a given. It's like multiple choice questions: you have to look at each question and answer it independently of all the others. You can't say "well, if the answers for the first three questions were A then A can't possibly be the answer to question 4" - they're all distinct, separate entities that need to be treated as such. You've
temporarily (
NOT permanently) lost your sister for any number of reasons. You feel as though you've lost your friend, but again, that's for different reasons. Now, your parents, remember, are
two individuals who just happen to be married. They are not one and the same person, and so what one thinks is not necessarily going to be the same as the other's opinions. I read something somewhere that talked about how sometimes one parent takes it better than the other - one might be more readily accepting than the other, or they might both be equally accepting, or they might both be accepting but one may show more sincere interest in how you feel, that sort of thing. So, the point is, 1) temporarily lost sister; 2) friend up in air, may have lost, may have not; 3) Mum may take it well tomorrow or may not; 4) Dad may take it well tomorrow or may not. In all honesty, if they mean as much to you as you say (which I don't doubt), then it's highly probable that you mean just as much to them. In which case, I doubt you'll "lose them" as you say. Again, I can't promise, but surely your therapist would not be having this coming out session if they thought there was no hope of acceptance. And remember too that the therapist will be there to help explain things - it's not like you're being locked in a cupboard and told to fight it out. You have emotional support there, and they're your parents, so if they're going to a therapy session they may already be trying to figure things out for themselves.
Sorry, don't know if any of that made sense or helped at all, but, to return to the short answer... I think everything will turn out well. You've formed close relationships with the people around you, meaning they've formed them with you. So yes, I think everything will be fine, if not immediately then certainly soon. When you go in tomorrow, be calm, have some idea of what you want to say, and remain optimistic. If things
do happen to go pear-shaped tomorrow (which I doubt will happen, but if worst comes to worst), then you've always got some cyber-shoulders and -tissues here if you need them. But as I said, if I were your therapist and I thought your parents would take it badly, you wouldn't be having said coming out. But you ARE having it. Therefore, your therapist must be think it'll be fine.
ALL THE BEST!!!!!!!!!! (I'm sure it will go well 
).
Lutin
