Blake, hang in bro'. At your age it's a tough time. My niece is exactly your age in the exact situation, my sister separated from her husband a coupla months ago. Find someone you can talk to. Sometimes it helps alot. You're a funny and mature kid for your age ( "Jack Nicholson's" prank call to that woman had me dying from laffin' so much ) and you can get through it with a little help.
Don't hold it inside, try to find an adult you can trust and that you feel cares about you.

We ain't professional counselors here on the board (maybe someone is) but we're here for you, my friend.