Is it ok to tell someone your not interested in them because "they're not your type" ?

So this guy was dancing with me at club. And I don't mind to an extent. In terms of being friendly. But if you dance with a guy they think that means you like like them. So I was keeping a little stand offish too. And I admire it cos this guy just asked me outright that he was sensing I'm not into him. And I said yeah sorry, your just not my type. And he was oh OK. He left for like 2 mins then come back and said "just out of interest what is your type" and omg... what am I supposed to say? That I'm physically not attracted to him? Aghh. Awkward. So just to put my foot in it lol I asked how old he was. He said 34. I said i like younger guys. He said but he is younger haha. (Than me). So true lol. But... yeah... that wasn't it.

Also... it's a tough situation cos I wanted to be nicer to him but if you dance with a guy your not interested in its gonna stop any guys you are interested in approaching right? Which I'm not usually looking for guys in my bar. I just go to dance. But my broken heart was in a "fuck it" mood this weekend.

Is it ok to tell someone your not interested in them because "they're not your type" ?
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