2 weeks without drinking then PARTY TIME!
with a beer in hand," i told you i could do it now i deserve this."
or something similar.
re read these words ya typed a few times:
He's 42 And I'm watching him drink his life away and act like a teenager with no compassion for the people who love him.
then
Should I take him seriously and hold him responsible for him saying he will go 2 weeks without drinking?
reread those a few times.
if the lease is in your name only, then i think you can evict him. as sparklekitty said, talk to the LL- they should know the laws.