Would people like the fact I'm mysterious?

I am very often to myself and consider myself very unpredictable when it comes to personality. I respond to the world to being collected and calm, and would never want to associate with people who walk, talk bombastically. I am quite cold at times, but I am a warm natured guy when I'm socialising with close friends. I tend to have less friends (who are close to me) than to have people who I can barely trust. I am talented in music and art and am smart in academic studies. That's what my teachers and friends say. Particularly with girls I wouldn't consider myself the 'Mr. Nice guy' I would say I'm neutral. But in terms of flirting I am mostly preserving myself to who I think would be my potential girlfriend. Would people consider me as a flaw in life? Or an avoidance just because I'm not crazily motivated to socialise and party? I just think if I should change myself to be with everyone or to make my own image. Help anyone.