I’ve had two relationships with women immediately go downhill after I cried in front of them. It was like someone flipped a switch and turned off any physical attraction they had to me.

Can absolutely confirm this, myself, on a personal level.

Never let them see you genuinely vulnerable unless you want to drive them away, or want that to be weaponized against you at some point in the future. Sometimes even both, but never neither.

Only ever provide curated vulnerabilities that offer of themselves no true vulnerability, but satisfies any desire they may have to see vulnerability in you. Like being distressed at the sight of an unknown dead dog on the side of the road, for example. Clean, simple, controllable, and superficial.

Violate this tenet at your own psychological risk.