But how is that any different from having close friends, here? You still have them ... you still cry and feel frustrated, when they're hurt. You still do everything you can to protect them, even when they're not on your team. You still forgive them their sins, because you know you would have done the same, or because what they had to do was necessary, or just because they're important to you and you don't want to lose them ...
If you don't lose sight of what's important, I think ... things don't have to be so complicated. Otherwise ... you may as well just not have any off-team friends at all.