Errr... maybe one month?
I met my future DP when I lived with the ex- he was our next door neighbor. Because the ex didn't want anything to do with DD or myself, we spent a lot of time hanging out with our handsome, broad shouldered, cheerful, chatty and friendly neighbor.... It was nice because we got to know each other very well as friends, in our own homes... so I knew he was messy before we got together
He stopped being our neighbor about 8 months before the ex and broke up, and we moved in together about... six months later?