I'm Not a Doctor, But I Play One on DB

[PortlandDad]

People have A's for lots of reasons. Some do it because they are addicted to sex. Some do it because they like the "thrill" of getting away with something that is forbidden. Still others are searching for something outside the marriage that they weren't getting inside it.

While in SPs case, the "Don Juan" seems to be a flighty predator, the OP doesn't always fit that description. Not all their promises are empty, nor all their affection superficial.