Even the slightest hint of infidelity.

I don't put up with cheating, I don't cheat. Emotional cheating, physical cheating, all of it.

The difference here though is not me making rules about infidelity, but the girl I'm with needs to WANT TO and be okay with saying 'sorry I'm taken' when asked for her number, she has to want to not engage in old flings (unless it's occasional and totally platonic).

It's a whole attitude that she won't cheat, and this all comes from them being ready to accept a serious relationship.

Refusing to ever be wrong. Lying. Not appreciating things done specifically for them. Trying to make me jealous (I won't be, be with me or not, her choice.) Being lazy, boring, and unintelligent.

Playing mind games / doing tests, etc.

I have absolutely zero tolerance towards those. If I spot a potential candidate doing that, I immediately lose a lot of respect towards him/her and become suspicious. The second time I see him/her trying to pull off some kind of similar stuff, it's time for goodbyes.

I'm looking for someone trustworthy and with whom I can be at ease. Not someone who tries to provoke a fight every day.

When they're rude to dining staff and other customer service people (but usually dining staff), it's a HUGE turnoff for me.

Someone who needs to tear others down in order to feel good about herself.

When my son was about four, we decided to have people over for dinner. My husband’s favorite dish to make was a salad with octopus. My son couldn’t say “octopus” properly because of the lisp on the “s,” so we called it tentacle salad.
We had a few couples milling around the house while my husband and I were prepping appetizers. In walks my son, sees the salad, and then runs around yelling, “Hey — we’re going to have testicle salad!”
While that would normally be funny on its own, the real problem was that my husband and I were already known for being experimental with food. It took a little convincing to assure everyone that there were no actual testicles in the salad.

I was watching my niece (two at the time) one day, and I sneezed. She yelled out, “Godzilla!” I turned to her and said, “What?” She said, “Godzilla,” then looked at me like I was crazy for not knowing that’s what you say when someone sneezes. I asked her mom about it, and she said she didn’t know where it came from—she just started saying it one day. So now, 30 years later, if someone sneezes around me, I say, “Godzilla.”