Hello Friends,
How lovers approach one another can significantly affect how and to what degree arousal occurs. The timing of eye contact moments can make or break the rate and degree of passion. During oral sex, I have read that some givers enjoy watching the receiver as they work their magic and put every ounce of energy into giving pleasure. They become highly aroused as this proceeds.
A lover pointed out to me many years ago that I enjoyed seeing her as I aroused more and more, and I didn't realize until she correctly labeled my giving her oral sex as the trigger for my becoming very aroused. Likewise, she reciprocated, but her giving me oral sex was more like her being wholly focused on my penis, like it was the only part of my body she was making love to.
In our case, we learned to prepare for copulating and timing our climax at the exact moment at least 90% of the time. Successful foreplay? Derived from knowing what we liked and what we responded to best.
Communication and observation. Also, it would be best if you cared enough about your lover to keep them in mind.