aw!gabi chick i dunno what to say, there doesnt seem to be any reason for him to act like that,the same thing happened to me resently aswell, i got talking to this guy and we got on great talking for hours just like you and youre guy then all of asudden he just stopped talking to me, i felt real bummed coz we where getting on great i thought id found somwone i could really confide in but he just stopped talking. i dunno why.
i hope you sort everything out with this dude and that you feel better soon.