Am I wrong for hating my dad for dating a 19 year old?

Me (late teen), my father (37), and his current girlfriend (19) used to all work at the same place. My dad was the assistant manager and had gotten fired right after they started to date. Her and I both still work at that place. He’s here almost EVERY night.

I hated my dad for other reasons before but this situation made my hatred grow.

My dad will act really childish around her, it’s gross to me. I’ve heard stuff being said from them and seen their messages before. It makes me super uncomfortable and upset. My dad is aware I hate them together mainly for the fact that there’s a 18 year difference between them and he’s JUST barely a legal adult.

But seriously am I the asshole in this situation?

Am I wrong for hating my dad for dating a 19 year old?
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