Get the taunt skill, it arouses both you and the enemy. Your enemy usually goes full mast after you taunt them once but you need to use taunt 2/3 times before you're fully aroused.
Also if you manage to get your enemy off balanced you can take the lead by riding/mounting them depending on who you're fighting. Riding them is pretty straight forward but if you want to fuck them you're gonna have to wrestle them on the ground for a bit.