So, my fiancé's parents are pretty crappy people. They're materialistic, literally pay their rent by selling pot, and just jerks. When they have a disagreement with their son they cut him out of their life completely. They're pretty toxic. I realize I'm not marrying them (and my fiancé is nothing like them as he was raised by his grandma) so I usually don't let their ridiculousness get to me but this last time they cut communication with my fiancé it was over $100 (that he never agreed to paying in the first place), and during this time of silence from them we got engaged. Since then he's tried to patch the relationship just because he doesn't want regrets down the line from them not being at our wedding, etc. since talking to them again they haven't congratulated us, offered to help with any wedding bills, planning or anything. They won't even commit to saying they'll be there. This pisses me off since my dad passed away, and would have loved to see me get married to a person that makes me happy and his parents have the nerve to just...not give a shit and prioritize a Hawaii trip over their only son getting married. . It leaves a bad taste in my mouth.