The only love that may be unconditional is a parent - child love IMHO..
If your beloved wife is cheating on you, if your best friend is screwing your wife .....love is entitled to be terminated. Sometimes it isn't, but is that always wise?
If a man has a son , and he turns out to be the doer of bad deeds, ...I see that fathers still love them, even if they recognize what he is, and has to pay for his deeds,