What is more important?
A major examinations that will potentially impact your life with
such strength, or a feeble illusion, balanced on a string of
feelings which could be nothing more than a crash?
I've been in your situation. You have to make a decision, and stick
with it.
Stick with it till the end - the light at the end of the tunnel is
your salvation. Whatever you do, don't look back sometime in the
future, and think, "I should have done that."
Like I said, I've been in the same plight before - struggling and
struggling, drifting and drifting. I felt hopeless and depressed -
"I've done so much for her, yet in the end, it doesn't even
matter!"
It is useless to think that way. While making a decision seemed
like the hardest thing on Earth to do, just do it.
That said - God bless you.