You might scare girls by these background images in the first video. It scared me.

How "normal" people fall in love? Good question. I doubt anyone knows the answer. I think it just happens. I mean even if you have many similar interests with a girl, it's still not enough. There is a chemistry plays in. But I would say if you like a girl in real life, you need to take certain steps: make an eye contact, make a little talk, ask for date, and then see what happens. I should put my advice to action for myself.