best friend???boy friend??

Fall in love with best friend...is it okay?????like you've been with him for about 5 years....as a friend...but suddenly,he come back to you...and u saw him grown up...from childish....to more matured....from little kid,be more handsome....so,how's your feeling...even wen you're with him,when you saw him close to any other girl,u'll be jealous.....so,what's the meaning by that....even though that he's just ur friend......hmmmmmm...okay out of topic op MBLAQ-ing.....