How do you know you're in love.

How do you know you're in love with them (or anyone in general):
There they go. As flawless as they can be. Everything about them makes you smile like a kid at the carnival for the first time. You can't blame yourself because you're in love with them. How in the world did you end up here? You feel like everything in your life has happened and aligned so that you could be at this place to meet them. They were everything you wanted and needed. You are happy after a very long time.

When you hold their hand for the first time, their hands feel like the right temperature, the right size. Waves of excitement and joy rush over you and drags you under. Then, you found out that you can breathe underwater. What joy! This is the most amazing feeling ever. The first kiss. The first time you went on a date. The first phone call. The first sleepover. You will feel invincible, like nothing can kill you. You were on top of the world. It doesn't matter if someone came and knock you down. With them, you could just climb up again, no biggie.