Being Needy Vs Confidently Expressing Desire - A Crucial Distinction

Are you constantly worried about being too needy when dating?  

Most men and women try hard to avoid looking too desperate or needy with their partners, and this often leads to wants and needs not being met. 

Needy behaviour is often seen as being repulsive by both men and women, so naturally, this is something we try not to do when attracting a mate. 

If you are asking a girl out on a date, or asking a man to spend more time with you, you need to be able to do it in a way that feels confident and not needy, but what's the distinction?