Love Sick (see also
Unrequited Love)...best friends of the opposite sex who have known each other for decades but never got their crap together at the same time to “be together”. They know
literally everything about each other, and have hooked up over the years (not to be confused with “friends with bennies”). They are each other’s “person”.
Love Sick becomes “Love Sick” when one party (often the guy) suddenly realizes he
totally fucked up and didn’t marry their “person”, but married “bat shit crazy” instead.
Despite both parties now able to be together, the Love Sick person will have an epically dumbass reason why he cannot (the bat shit crazy wife he divorced but she won’t move out).
Love Sick usually gets totally honest with bat shit crazy wife, who becomes obsessed with “the girl”, making life a living hell for Love Sick with constant fights.
Love Sick becomes OCD with unrelenting thoughts about his “person”, interfering with his ability to do his job. Refer to movie AIRPLANE. Can’t land a plane.