youre living with his parents must be hard.
but here is an idea:
why don't both of you be adults and sit down with the parents and have a conversation with the parents about how you are feeling? don't point fingers,though. keep your words about you, using "I" statements.
set boundaries,too.
or you can keep avoiding it and let it keep destroying you while it doesn't bother them at all.
its more powerful to speak up than silently resent.
and resentment is like drinking poison and waiting for the other person to die.