Following the guys cues during the act...meaning their breathing, voluntary reactions...such as verbal and physical, involuntary reactions like pre-cum, him getting harder, hip thrusts, his peen "jumping"
I think thats what separates people who are good at sex from anyone else. It's all about your ability to read your partner, once you can hit "that spot" and realize where and how, just keep hitting it and get those sheets soaked
