You see it happening again and again, you hear the same old lines, they think they've got it, that they've finally got it right (wow... like, this is the 1000th time you said that). But yet in a matter of months, maybe even weeks, you see the situation collapse into that horrible, yet familiar scene of destruction. Again.
Some people have vices that hold too strong in them that once a teeny little bit pressure is applied on that spot, they crash. And burn. Hook, line and sinker. Their brains become mush, their senses become nonsense, their eyes cease to see, all they think of is that things are perfect. Oh, yes it is. But only the here and now, is. That's because the immediate desires are being met, the craved-for pleasurables of life is being stroked and pampered. But how about the future?
Beneath all the merry making, beneath all the physical pleasures, hidden under all the "joy" and fun, and the smiles, and laughter, the conversation, the romance and all that one thinks one is having, is the core of what makes the same old problem repeat themselves, over and over again. What the core is, i don't know because everyone has a different story to tell. Yet i wouldn't hesitate to add that in most instances of such problems, there is always a few common bottom lines of... Malfunction. For lack of a milder word. It is so rudimentary, it probably would even be part of our human nature, hence uncommon it is not.
And you want to grab them and tell them: STOP IT. But you don't because you don't want to spoil a good friendship, you don't want to be accused with "You DON'T UNDERSTAND!".
But it is only out of concern that you don't want to see your friend hurt.
Still. Fear. And so you watch it happen. Like a semi predictable movie that you know could swing in either direction, but from the repeated cues, hackneyed lines, and typical scenarios, you know... The possibility is very high.