I am a teenager and i am already been infatuated many times. now what i feel while seeing him is really diff.?

is this 1 love bcoz what i felt before is really different from this................i really care for him but i didnt care for any other boy with whom i misunderstood to be in love ...................n now when i have got this feeling ............................i know that b 4 hand i was infatuated .........................is this time it is really love.........................?