L O V E

how do you know that you love someone? i mean, is it a feeling? is it that you never stop thinking of them? is it because the sex is good? is sex even a part of it? what if it isnt? can you love someone that you dont really know or do you have to really know someone to feel love for them? what about those people who said they fell in love at first sight? is that really possible? how do you know that the person that you are with is THAT person or not? How do you know that the one is THE one? what does all of that mean? how do you know?