It doesn't matter where in the world we are, or even if we have a house an apartment or even a trailer or not, as long as I am with you, that is our home.
Yeah I've been feeling everything
From hate to love
From love to lust
From lust to truth
Sheeran is describing the transition for his feelings for this person and how they change so quickly, and with each new feeling he comes closer to realizing that the truth is that he and this person were meant for each other and that it is love.