Was on a flight today, seated next to a pretty cute girl (pretty certain she was older than me, maybe by 5 years, she looked a bit more 'mature', for reference, I'm 18), at the time I haven't thought much about it and I didn't really feel like talking due to being tired, unsure of what to say and because I hate trying to 'flirt' when my parents are around, i.e. this flight (unsure of why, but I just feel like I'm a bit different when talking with my parents and other people).

So the flight ends, we get in a cab and we drive home and I realise that few signals went over my head, I might be misinterpreting few but it 'bothers' me too much than it should have lol.

Tl;dr - Don't be a bitch, if you feel that the girl is interesting/cute/attractive/anything and you're hesitant about approaching, just fucking do it.