When aroused by the opposite sex to a point of violence, i.e. biteing lips whilst kissing. Or unintentional punching/kicking during lovemaking. Rough love, but not meant to be rough, like accidental abuse out of pure desire from a heightened euphoric state. Afterwards the action is excused out of love and understanding of ones awesomeness.
When my woman smiles up at me during the deed, i get so blood horny that i accidentaly slap her. But she likes it!