as hard as this may sound, I don't think you have had any entitlement, what you wrote sounds like the stuff leading up to a love-story, not like the actual thing.
did he promise you anything? yes he said he liked you, and so did you, but that was some time ago and feelings change.
so what he did was the mature thing and tell you outright, after getting a feel on how he stands towards you, that he would like to be friends with you, but nothing further.
he cannot be held responsible for not fulfilling your expectations and wishful thinking... I also don't know about any rule that states you have to give a reason the other person can accept if you want to stop something.
it all seems awfully like the male version of the friends-zone.
if you don't like that then go for something like:
"because the aries is such a fighting nature, he needs some resistance in his partner, something unfortunately he didn't find in you, your actions suggest something gentle, talking to each other before going to bed, something he likes, but drives him away sexually, bla bla"
sorry I can't carry on with this bs...
what you want to do is, either be affectionate and warm, show him that you will not reject him even if he pushed you away, thus reassuring him that you are something that likes all of his aspects.
or what I would reccommend: give him some time, don't act like a bitch about it because you can't get him to like you if you think you somehow have a right to it...
maybe don't talk to him every night, just back off, saying you are looking for a relationship at the moment, and a friendship with him would be too close for comfort.
be a genuinely nice person to him and others but don't give him special treatment, make it clear that you had hoped for something different once, and then leave it be, if you feel it is right, you can tell him that he can come talk to you if he changes his mind, but you're not going to wait for longer than, I don't know, maybe 2-3 weeks.
loose the fedup attitude, it will make you a much more likeable person.
good luck anyway