Did I mess it up ? ?I did something mean....?

I really like this guy to the point where even if he doesn't like me I'd still like to be just friends and I'd deal with that cuz well he's the coolest .....I did something today and I don't know how to make it right I hope I'm just making it into a bigger thing than it is ----this guy and chick were talking to him and I was just standing there and randomly they asked a question "sre you two together ?" And I made the most disgusted look I could just because I don't want anyone knowing how I feel(the other guy at the end said "oooh you got dissed " which I ddnt mean AT ALL to happen ,,I've kinda been raised the way not to act like I like anyone and to ignore my feelings ,,I really need help on this (I'm an 18 year old female BTW ) I'm not good at expressing myself but I really really like this person plz help lol ....ugh I feel clingy or something lol thank you :@