Isn't that the assumption with most 50+ women who haven't been married and/or dated prominently, at least in public (for those who are public figures)? Used to be teh case for men, too--the "eligible bachelor".
Tho' I think she has brought someone (male) from the NFL offices as her "date" to the few state dinners that have occured during this admin. Perhaps Janet Reno was on the banned list.