recipe for disaster.worse if u're only hooking up with her for sex.from wht u said she soon wouldnt b content with only sex. ive done this before with my brothers friend behind my brother's back,we were even trying to pursue a meaningful relationship cos we were crazy abt each oda,we didnt even have sex, they werent even close friends and it ruined the friendship when he found out and it didnt work out. he thought i was taken advantage of.at the end of the day blood is thicker than water