Search past HN posts and even Google the topic. People have written a lot about this, and nothing that will be said here will be any more useful without more context on your situation...
If you really want feedback to YOUR post on HN, I’d say to rewrite it with more context on your idea, background, and what you are looking for in a co-founder (skillset, money?, location, commitment, etc.).
Don't "look for a cofounder".
Collaborate with friends and loose connections on projects ("date") and escalate from there. (Don't undershoot "loose".)
You need to be friends[2].
Get hitched when you're sure.
[1] https://www.amazon.com/Founders-Dilemmas-Anticipating-Founda...
And on many occasions, a business divorce is far more financially painful than a marital one.