What Happend w/me ?

I don't know what happend with me, i just feel so different..
From yesterday, the day before yesterday..
I knew i was the one who easily falls in love with someone..
But, why him? Why be with someone who already loves someone else? & why I was jealous when he was talking about the girl he likes? OhmyGod, kill me now because i'm fall in love, again?-_- I hope this is just a bad feeling, or my nightmare! Of course its not real, i hope so. Amen.