Did I hurt him? *please read*?

i was FWB with a friend that i knew way long before for 2 years. i ended it last night. i told him, i was looking for a relationship, and i knew he couldnt give me that. i told him i wanted to still be friends with him. but he insisted we could not be friends because "you know whats best, right"? is what he said to me. he began to say that this would be our last conversation. honestly, i thought he would be ok with this. after all, i know he is seeing other girls. i even said to him "you have other girls right"? he replied "yea" i then said to him, "so why are you so concerned about me, if you have other girls". all he could say was "you know i didnt want a girlfriend" and i did know that DUHH....but why he admit to being with other girls. and seem so upset at me. AND not want to be friends anymore? is it possible he might of had some feelings there? or was his ego bruised type of thing? i know blasting this on the internet, call me crazy. but i cant get any closure from him. so, please help me. why would he tell me these things? why has he turned so cold on me?