(Asked in dating advice but thought I’d ask here as well for more perspective)

Friendliness = establishing trust, actively listening, asking genuine questions to get to know them, wholesome energy

Romance = flirting (compliments, innuendos, deliberate misinterpretation and so on), physical touch, tonality, intentional silences to build tension etc

Fun = humour, making them laugh, silliness, providing novelty and the unexpected, gamifying things, being a bit controversial

What ratio do you think is optimal when the aim is causal sex?

What about when the aim is dating?

Would you significantly change your approach from person to person?