In fairness, though, I actually feel a little for Tiger (not that he didn't do it to himself). How many guys have blown a great thing romantically? Except us nobodies can go out and find it again. We don't have to worry about a person's motives. A person in Tiger's shoes has to worry constantly about whether a love interest is interested in him for his money/fame. The one woman that he knows is not impressed by his money/fame is the one he lost.
Wealthy/famous persons can be pretty lonely for this reason. Its why so many only date other wealthy/famous persons, who aren't impressed with it. Except in Tiger's case, I don't think many other wealthy/famous women are too interested in him, at least none that have Elin's class and looks. So in his mind, his options are a lifetime of questionable bimbos (possible gold diggers) or get Elin back.