Someone who, for any reason, has or is willing to have sexual interaction with others they aren't sexually attracted to. This may stem from finding them attractive in other ways (romantically, aesthetically, etc.), from having conflicting orientations (such as being a sex-positive asexual, biromantic with sexual attraction to only one gender, etc.), or from simply having a high sex drive and a "take what you can get" sort of mindset, but none of those have to apply to use the term!
Someone who, out of their own impulses, has or is willing to have sexual interaction with others they aren't sexually attracted to. An impulsive whimsexual doesn't seek out those interactions actively, but may agree to or even initiate them when an opportunity arises, based solely on their own mindset at the time.
An impulsive whimsexual's interactions outside their attractions are likely to be inconsistent and rare, as what they might be willing to do in one situation one day can completely change the next.
Someone who has or is willing to have sexual interaction with others they aren't sexually attracted to because they're platonically attracted to them. They may see sex as a potential platonic favor, a manifestation of their comfort and trust with their friends, or a way to bond with those they feel close to even if they aren't attracted to them in the traditional sense.
archival tags (please ask to be added/removed!!): @radiomogai
the second batch of whimsexual terms is here!