Break Up & Divorce

What was the biggest relationship red flag that finally made you walk away?

I am presently 42, So this was some time ago. Most of the time i dont see red flags until its too late, so keep that in mind, but this one was so obvious that if i didn't see it i would be stupid.

I was 27. I was with someone who i though i was going to marry. We discussed marriage. I proposed to her not once, Not twice, but three times. We had been together 4 years, I proposed once on year two, once on year three, and once on year 4. Because in this instance, i'm a freaking moron. On the third and final time she said "I will decide when we get married and not before" And then she disappeared for three weeks. Didn't answer calls, Didn't answer texts, tell me anything. The last night of the third week, i am having dinner with my sister. My girlfriend showed up, Saw my sister and was immediately pissed off and in tears, she apparently didn't recognize her (she's only met her once), She said "How could you move on so fast" and so on. I explained that she is my sister, And my sister took that is her cue to leave. I asked her where she's been for three weeks, She told me she needed space, that she didn't want to talk to me and so on. She said that she thought i moved on, that i was done waiting. I told her that i was. I had been fighting for 4 years to marry her and i was just done. i asked why, she said she was waiting, i said "Nah you are just keeping your options open while wasting my time." She said that wasn't fair, so i asked what the real reason was. Apparently she's jealous of her sister, Her sister just married a doctor, His salary is 4 times mine, and she's "Waiting waiting for you to get your ass in gear so i dont have to work any more". I told her to get out. The next day i start looking for a smaller apartment. A week later i moved. All the while she's calling and texting me, and im ignoring her.

Fast forward two years later, she married some rich dude who cheats on her, and im married to my wife. and I've never been happier.

What was the biggest relationship red flag that finally made you walk away?
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