I am with mal on this one to a point.. I have had it come up and I have spoken about at a later time before, but I am talking about 1-2 years afterwards and to people who never knew the other person.
While I am still with the person, I am around people they know, or it has been somewhat recently then I do not talk about it at all. It is personal, no reason for them to know
"Sex is not a competition"