It’s True, Men Put Us In Three Boxes: Here’s Which One You’re In
Ladies, you need to know about the “box theory” immediately.

You have a crush, and your heart beats quickly when you see him. You think about him frequently, and you’ve probably even fantasized about having a relationship with him. This situation isn’t foreign to us; we’ve all been there. Some of us experience it repeatedly. This could be because women tend to fall rather quickly, and once we do, we only think of them in a romantic sense. We have no space in our minds or hearts for anyone else either, and typically reserve the physical intimacy for them. For many of us, we don't have a roster of men we put on specific shelves under the labels of “husband” or “hookup” material. We go for the man we have strong feelings for and don’t question it.