kiss and tell

for minor only.. lol.. well idon't have much idea what "kiss and tell" all about. i opt to post this one to gather more information what this thing means.. for as far i know, it is when a guy or girl shares something to their friends that there is something going on with his/her partner. something that is related to "sexual activity".. hmmm.. is it proper to share it or just keep it as a secret shared between the two of you? how do you see it when a person tells something with regards to this topic? hmmm.. need your comment guys.. :D