In love = hypomania, you may be right on that. Though the last time I thought I was in love, much of it felt damned good but part of it felt lousy. In my MILD hypomanic state, very very seldom (many years apart, lasting a few months), I just felt damned good all the time, OK a wee bit of irritability no big deal, in fact the first time it happened I thought my depression was cured, what a relief... foolin' myself was all, of course. And was foolin' myself with Love as it turned out (FAR too young for me, good grief what was I thinking).