How do I know he's the one?

So this topic comes again and again...it's just so interesting and each time I find something new out I just wanna write it down, so that I don't forget...

So here it comes:

I think he's the one if you know you're not missing out on anything: laughter, joy, shared interestes, shared passions, great sex, quality time for your selves, and any others fundamental to your happiness and well-being.