After three dates his kids don’t need to know he is dating. It’s no one’s business after just three dates. It’s no big deal. I never made announcements after 3 dates. I might change my mind on dating someone after more dates so no reason to inform everyone. Not because it’s a secret but three dates is nothing. If you dated for months then I’d think people need to know. Not few dates

If however someone says they never want to get married again, you need to trust them and not sit around and wait he changed his mind. If you want to be married and he doesn’t, then he isn’t the guy for you