How could I say that 'I am in love'?

first u just tell me to whom u want to say this i mean infront of whom ur 1) parents 2) ur friend 3) ur girl friend to whom u love . 1) if u want to tell ur parents about "I am in love " take a help of brother's wife or directly say ur mom . 2) just tell ur friend directly that " I am in Love " 3) but if u want to say to ur girlfriend 1) buy a red rose for her 2) go to her and bend on ur knee and 3) said " I am in love with u" gohead man what are u doing here .

U r in love whe u cannot stop thinking of a particular person and want with that person in any possible way. U have a shine in ur eyes and u feel good inside when that person comes close to you or talk to u.... This is the beginning of being in LOVE..the most beautiful word and feeling