Same principle as the Involuntary "You Too", this is when out of habit you say I love you as you hang up the phone. This causes great embarrassment, but it happens to everyone sometimes.
When you hate and love someone at the same time.
You don't know how to explain your love and hate for them, so you use a little of both.
Shirlena and Tourettes Guy often exchange this love-hate relationship phrase.
Tourettes Guy: ALL YOU DO IS SIT IN FRONT OF THE MIRROR AND PLAY WITH YOUR TITS AND STARE AT YOUR ASS AT THE SAME TIME
Shirlena: *throws cereal bowl at Tourettes guy*
Tourettes Guy: *picks it up* BITCH, I LOVE YOU.