That sounds like a fun idea.

It reminds me of boxers and their antics in the ring. It would probably have the affect of enraging an opponent leading them to attack you wildly. That may or may not be useful depending on how and when you use it. For instance people attacking wildly would have more attacks but less defense meaning a rogue in that instant could perform a critical strike for more damage.

When using it in non-combat it could have the effect of distracting someone allowing a rogue to steal from them more effectively. You would probably lose reputation from the person kissed but maybe not? Depends I guess.