Dont think you have to be married in order to live with someone else, but i do think the only imperitive situation where you "have" to is when you want to have children with that woman.if she's not your wife, how is this a consideration?
Most guys accidentally kill attraction before they even speak. They assume they need a bigger bank account, a better physique, or smoother lines. They miss the point.
Female desire operates on a specific set of psychological triggers. Break them, and you're invisible. Follow them, and you become magnetic.
I learned this the hard way. Years of freezing up. Getting friend-zoned. Watching other guys walk away with the girl I wanted. Then I discovered a set of 22 simple rules that rewired my entire approach.