If your girlfriend still uses 'I'm not ready' after 5 years, the data says she's just not that into you

I ran the calculation on this one. I have a theory that Nigerian women know within the first six months whether they will marry you. Everything after that is just logistics. So when I see a guy waiting five, six, seven years for a woman to 'feel ready', I am looking at a man who is ignoring the numbers.

My friend just got married after 8 years of dating. The woman told him 'I am not ready' every single year. Then she met a guy at work, dated him for 4 months, and married him. The math is not complicated. The data suggests that if she wanted to, she would have. Lagos is too expensive to be somebody's placeholder.

Correlation is not causation, but the numbers say something. What do you think, is there really a 'right time' or is it just a soft no?