I’ve never been…

I’ve never been hit on, or asked out etc… I was at the bar with my co worker and his roommates, the next time we saw each other he was like why didn’t you get hit on? My roommates did I did etc… I’ve always concluded it to be the fact I’m 5”0 and people always tell me I look 16 at most, I’m almost 22. I also am not an outgoing person really so maybe that’s it… i genuinely had to think about it when he asked… it was lowkey embarrassing and i just replied to him with idk most people don’t find approachable because i always look I don’t wanna talk to people… and he kinda just got real quiet and dropped the convo…