Why do some people...

I think its probably too much love, stupidity, or martyrdom. There are really people who are like that. Sometimes if they are married, some want to save the marriage for the sake of their children. Probably also those people are too weak to be alone. We can't blame those people and we really don't know what are their real reasons behind it. But as the song goes, "too much love will kill you" lol.

Some people just want the attention, even if it's bad attention. People with low self-esteem do that stuff and just find excuses to convince themselves that it's somehow right what their doing. It's weird.