Let's say you are with your partner, you've had a nice date, you're back home, things are getting hot and heavy, and you two go at it.

Assume there's no medical conditions, or substance use, or stress from work, etc.

At first everything is okay, and you are enjoying it. But eventually they get theirs and are too spent to continue.

You have not reached orgasm and as a result, you are feeling a little sexually frustrated. How would you distribute the responsibility for this percentage-wise?

DISCLAIMER: Not saying orgasm is the goal. Not saying it's about "blame" or fault.

Inb4 "pfft, this would never happen to ME because xyz" - just go with the hypothetical.