What's a deal breaker for you?

Being a Trump supporter, at this point.

A lot of things. Not having integrity is one of them.

Don't set my cat on fire

Shaving your back.

In a relationship, cheating. In a friendship, breaking the law. In anyone at all...hurting other people physically.

Lack of empathy, honesty (all kinds), or responsibility.

These days, I add lack of high intelligence and creativity.

Relationships take time, energy and commitment.
There isn't enough time in life to have more than one intimate relationship and a few friends.
So it pays huge dividends in happiness to choose carefully who comes into the inner circle.

If he ever tries to defend himself 😶

Liberalism

narcissism

Taking the zodiac too seriously. Not going to base a relationship on something I don't believe in in any way.

Not changing undies and gingivitis! 😁

Quite a few - but the ultimate (final?) one is no respect for human life

Being stupid/insensitive and cheating.

Not being able to trust someone.

Smelly breath 🤢

Lying not having trust.

Stupidity 🤷🏼‍♀️

Lies