unrelated to what everyone has said here, there lie other implications of (heavy) sexual activity, especially regarding lust vs love. This is something that the most careful of people can
people used to save sex til marriage in order to fully devote themselves to their partner. It was expected that people were virgins up until marriage. Nowadays it seems that socially people are expected to have sex before marriage (almost experimentally--like doing drugs). Some feel the need to have sex on a regular basis, some need it with someone new on a regular basis, others are content waiting. Depending on what category you fall in, you may have trouble grasping the concept of people promoting abstinence or vice-versa. Some need it and must have it, others don't give it a 2nd thought.
Although it seems harmless at the time, having too much sex can be detrimental to ones' emotions in the sense that it makes it cheap. It no longer becomes something special that two people share intimately, it becomes a good time in the public bathroom of a place with some chick you'll never see again. You won't realize it until it's gone, but just make sure when u do it that it actually means something to you--and that it's right. Because once you start doin it with too many girls that you just don't give a sh|t about, when you do find the right girl the feeling and intimacy of that moment just might not be the same between you two.
So that is another pitfall of sexual activity that people prob don't think about. I guess you know you're over this when you can do it with a not-so attractive girl (won't call her ugly) who you love and not have to close your eyes and picture some chick u saw on the internet the day before. =] (and no i don't screw ugly chicks)
gug <--overly bored at work if u haven't noticed