For me unconditional love equates to believing in human dignity, that's your love for other people without question. But it does not go much further than guaranteeing the rights and freedom of other people. Other sorts of love is for most but the most naive almost entirely conditional, and for good reason, as they can hurt you badly if you love them and they do not love you (as a precondition)... and that's just for starters. There are many other pre-conditions to love.