Good question, we might also find it out for our self.
Ayya Khema once pointed out that sexuall activity is much connected with the defilement of restlessness, maybe I remember were I saw it. How ever it is a good point to think about it anyway.
While I have seen for expamlpe some tibeten teacher who tell people that it is ok to have sex to calm restlessness, sensuallity can not be overcome by stilling it. But yes, we might solve the actual problem as it seems to us.
Just that! *smile*
BUT! it is important to become a real Buddhist first. Like Punna did: Nate sante baram sokham _()_