No, with a Spare-style sigil, you don’t want to be too specific. Some specificity is alright, but too much lessens to the probability of it happening. It would be better to phrase it as something like “N. has sex with me,” N being, of course, the name of the person.
Another option that worked for one former member of this forum is to phrase it as a question in the present tense instead of a statement. For example, “How did I have such amazing sex with N.?” Check out the thread below.