Mistress Lena has perfected the art of giving jerk off instructions to the extent that she is living off of it. That is how she earns her keep. She loves to tease guys and make them have a good time by jerking off to her instructions and teases without actually touching her or fucking her. And in so doing, there are those who feel good that they have cum but have not cheated on their wives.
Mistress Lena is good at being naughty and getting guys to have fun and to cum. This guy knew that and he wanted a piece of the action. She could tell he really needed that cum so she asked him to pay for her jerk off instructions and after he did, she enjoyed teasing him and giving her naughty jerk off instructions which he used to have a mind-blowing climax.