In fact he did apologise for his rather un presidential behaviour the following day. The sticking point was the specific accusation in his general rather expansive joyous behavior the "kiss" was somehow a "sexual assault. In any sane world there would be some censure , his apology for being a bit OTT and everyone in Spain could have got on with celebrating a rather unexpected triumph. In the event the very recent passing of a "positive consent" law and some other controversial feminist inspired laws which are controversial in Spain, turned this into a supposedly Spanish "me too" moment.