Actually to be honest, all the jawaban before me are part of love, but it is also part of attraction to the person. I mean one does get kupu-kupu and feels nervous around a crush, but that does not mean anda would feel the same way when anda are in cinta with someone and they are in cinta with anda back.
Truth be told, the feeling of being in cinta is different for everyone. The same common feelings like wanting to be with the person always and all that kupu-kupu are still there, but when anda are in love, it all intensifies, beyond what anda imagined could ever happen before.
But above all else, being in cinta means putting someone before yourself and also telling yourself that I am worthy of such cinta from this person and I as a person would be able to give that cinta back. It's all about feeling that ability to give and receive as well as to care, sacrifice and respect.
anda know you're in cinta when anda think about that person all of the time, when you're jantung starts beating faster every-time anda see him/her. anda want them so badly it makes anda want to scream. That's how anda know.
You're in love- and I mean it- when anda can imagine yourself spending your days at the side of your loved one. When anda don't mind making sacrifices, when anda know, anda know, cause your jantung tells anda and your mind agrees.