Why does my heart beat fast when i'm with my crush?

Yes,i felt it just now.Very obvious ! whenever he comes online and starts talking to me it happens as well.But he will never start chatting.Hehe tak pernah ! Du lu gotla time february tu he starts it always.U know how awesome it is when he starts a conversation . But nowadays i cant get it.Tahla he kan lalang ,what to do.I have to start n he will end it ! Mcm giler kan =_= ok he going kuantan,i rasa mcm sepak dia! He wont online d la =/ till friday je.Tapi biler skul stat he wun on9 pulak :@ Okay nvm .. i am used to it ! Haihh I cant ssee you,no more contact and now seldom online.

Kill me !