zephyrAbsolute honesty. Tell your parents how you feel about everything. Sit them down and tell them how upset you are about how they're acting. Tell your mom you're not ready to be around her boyfriend, explain that you don't want him to be a part of your family yet.
I was fairly lucky with my parent's divorce, it was pretty amicable but that doesnt mean I wasnt upset. My brother and I were open about our issues and our parents tried to compromise.
Stay strong bud, things might suck for a while but it's probably for the best. Look at your parent's failed relationship and try to learn from it.
This is really good advice, make sure they know what YOU want. Trust me, even the worst parents juat want their kids to be happy and this is coming from me. My dad was an angry drunk and being sober didnt really improve his mood, but deep down i think he felt like he was doing what he did so that when i grew up i was tough. Just tell your paents what you want and dont sugar coat it...put it all on the table for them dude and it will get better. Add me if you wanna talk, im all ears.