worst one ever was when i was 14 - went to the cinema with a girl from a different school to see the 3rd LOTR film (keeping this anecdote on-brand with the rest of the thread)
got there and her dad and younger brother were there as well. she was like ‘oh they’re not coming with us, they just happen to be seeing the same film’ - she seemed fairly embarrassed so i just went along with it. anyway they sat about 3 rows behind us which was pretty stressful.
there was an interval (!) in the middle of the film, we went out into the lobby and they were waiting there for us with an ice cream for us each 
anyway it got towards the end of the film and i thought ‘fuck it’ and kissed her anyway \m/
and now she’s dating someone from a massive pop band (non-lesbian)