The turning point is the kiss. If you can gently comfort a female colleague who is feeling down after the contract with a client falls through, while gradually closing the distance between you and her, and naturally bring it to a kiss, then you have practically won. You will switch her into erotic mode in an instant. Just a kiss will make her pussy so hot and wet that you can feel it through her stockings. It may not be an exaggeration to say that you can do it with most women as long as they don't reject you for kissing them.