"I think that you can love people without it being the great love. (Singer/songwriter pal Ed Sheeran) says there are different kinds of love: There's physical attraction, mental attraction, and emotional attraction; there's also comfort and obsession. You need to have all of those things in one person. You have to mentally respect them, be physically attracted, and have a comfort level. You're obsessed with them, yet you also know they're going to stay. I've never had that in one person." Serial dater Taylor Swift is still on the hunt for her one great love.