[ Singles & Dating ] Open Question : casual sex why does he care?

ok so this guy and i once dated, we decided that it's just best to be friends with benefits, however i did catch a few feelings, but i am talking to other guys, we both agreed not to have sex w/anybody else for the time being however he told me he did hook up with this girl twice, but i can't get mad because he's not my BF, so i told him ok well how about i just hook up with one of the guys i talk too (not happening anytime soon) i just wanted to see what he would say, and he got mad at me saying i can't do it, that he would kick the guy out, im wondering why should he care if it's just casual sex, and why would he get so mad if he can do it i can do it too. i do still like him a little though. hmm why is he acting this way? or why does he care?

Source: http://answers.yahoo.com/question/index?qid=20110704025856AAhJXTw

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