Have a friend who just got engaged today and I honestly wanted to tell him not to propose when he showed us the ring but I kept my mouth shut.
Him and his now fiance basically fight all the time and he gives up all of his time for her. Like he will stopp anything the cares about doing to do what she likes to do while she doesn't really do the same for him.
Its not the worst relationship I've ever seen, but its up there.
IS it ever ok to be real with a friend about their relationship?