i think some people can be subtle. i think when i like someone i accidentally flirt. i show my humour and show more petty banter. im not always to sure when someones is flirting with me face to face. i think with girls it can be difficult cause girls normally are more intimate depending on their nature from past experience i think girls do the following: whisper amongst friends stare then giggle (like school girls) be looked up and down the teasing followed by a apologie then deep stare in the eyes constantly irritating you for no reason distracting you for no reason making you the centre of attention in a group complements with a gazing stare sometimes more physical like sitting on your lap acting more crazy in your presence acting childish trying to get your attention staring then smiling at you being "extra" nice winking watching your facial expressions doesn't stop talking about you to other people making you feel embarrassed and awkward cause they find it cute when you complement them they act very happy and go on and on about it