How do you know you're in love? HELP ME!

For those of you who know you've been in love before...

What's it like? Tell me all the for sure symptoms and things that might make you think otherwise...? TELL ME EVERY DETAIL D:<

Because i don't have a clue...

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Yeah i knew this would be too short lol, well what i really need is to know the symptoms and such and the like. I mean the only reason i'm starting this is to start a chain of comments, not really for information... i just need help for this, maybe i should try Yahoo answers lol. I'm such a dork for looking for answers online, but asking someone in PERSON? H*LL NAH, if i wanna live with shame all my life. ANYWAY that's 100 words...