When you’re a spy, you don’t have many friends, and the friends you have are not likely to help you out on a lonely Saturday night. You won’t likely be partying with high priced callgirls either, even if you weren’t suspicious they are trying to steal classified intelligence documents while demonstrating reverse cowgirl. Anyone you have sex with can be turned against you, and the honeypot is the oldest trick in the book. Humans are social creatures, and it’s hard not to get fond of someone you’re sleeping with. It’s best not to have sexual entanglements at all.
So …you are going to be masturbating.
The trick is to do it like an op; be quick, clean and quiet, and leave no evidence.