Relationship deal-breakers aren't one-size-fits-all, a personality trait that one person finds sexy might be a complete turn-off for someone else, and commonly accepted behaviors unnoticed by one person stand out as glaring red flags to someone else.
People being obsessed with their social media presence.
Inflated egos. Entitlement. Incapability of being humble and make fun of yourself.
The whole “let me push all your buttons, you’re wrong, I’m right, I do it because I think it’s funny to rile you up” schtick. Then repeat it immediately.
Self absorbed behavior...the Kardashian/Real Housewives Syndrome. You are NOT the star of some reality show, stop acting like it.
When they think that their taste in music makes them a superior person instead of just having different tastes. Applies to both genders.
Everyone says they want their partner to be super career ambitious. Screw that, I say put in your 40 hours then chill. I want someone who knows how to relax.