LADIES,PLS HOW DO U PREVENT A GUY FROM FALLING IN LUV WITH U?

I know this sounds like a rubbish question but we are all aware of the fact that we ladies keep more male friends than female friends. We find it more easy to relate with the opposite sex than with our own sex because the fact is that we ladies are full of drama and find it totally uneasy to trust one another unlike the men folk. We display this competitive edge that makes it dificult to really be true to one another as female friends..so we kip male friends who we can easily tell all our darkest secrets. But a situation where u become aware of the fact that this so called best male friend of urs is being to fall inluv with you and u are smartly aware that a rlship with this guy wudnt jst work, as the same time trying to kip the friendship intact, How do u prevent him from falling inluv with you?.........................