So we have both hooked up with this girl let's call her "Z". My friend got crazy feels (admitted he was in love with her). She was just looking for fun (Like most girls) and she wasn't really into that. So moving forward, me and Z have been casually hooking up and hanging (going to the beach and overall just enjoying eachother). On top of that she told me the sex we have is what she was looking for all along and I can see that. I have made this girl squirt and everything. She's also developed fellings and such for me and I am still on the fence with my feelings but I enjopy her company adnt eh sex is well, i have been everywhere in this girl. So my buddy is in a new relationship with a smalltown girl and she moved in with him after 6 months of dating (I know...). When our social circle was out for the night Z decided to sit on me and start dancing, he was triggered by this and told me that it's obvious that we're still hooking up. I told him about a month ago that Z was into me. I do my own thing see other girls and stay devoted to my own self, with work, school, and my hobbies. Mind you my boy is looking out for me but I don't tell him much about my sex life with Z because I know he will feel some type of way. I wanna filter out the jealousy here but what is it that is this dudes problem? I've asked him in private at a party if he was jealous about me and Z. He told me "no, i'm in a relationship duh" I need TRP's advice because I don't want to come off as defensive or anything of that sort, i want to understand. Thoughts for your pennies?