Nobody, that’s who.
Oversimplified, Pence steers clear of all women he’s not married to. No lunch dates with colleagues, no closed-door meetings, no booze if his wife’s not about. I have no idea if Pence is incapable of not being handsy without strict rules… but it will certainly reduce if not quite eliminate the possibility of any sort of accusation. If Pence is known to never be alone with a woman, the chances of a woman claiming to have been harassed by him would see to be virtually nil.