I'm in the process of becoming friends with benefits with this guy. I found out through a mutual friend that he already has a fwb. So I asked him about it and he claim he is not in one but I know he is because there is a sufficient amount of evidence that suggest he is. He spends a lot of time with his fwb to the point where I'm starting to question whether this is something more. He does everything in his power to keep me from finding out. Does anyone have any reasons why he would deny being in a fwb already?