adj: Pertaining to behavior in which feelings of affection are expressed in passive ways as, for example, by lacking warmth, dull kissing, limp hand-holding, non-aggressive sexual activity, or intentional inefficiency during intimacy.
The girl let him kiss her, but in a passive affectionate way.
Usually the female kind who has this problem, they are unable to show affection and do not see the point of it. They are unable to publicly or privately show much affection at all.
Dude: you are so amazing in so many ways your pretty and sweet!
Girl: kul wats up?
Dude: wtfpwnt Affectionately Incapable much?!?!?!