Relationships with human beings do not necessarily have to be romantic. We can love anyone unconditionally, and without putting expectations and conditions.
It means we make friends with people not because they can give us what we want, but, because of Allah.
In loving unconditionally, we create acceptance, respect, kindness, forgiveness and happiness. I believe that when everyone loves everyone unconditionally, there will be no strangers, and there will be no hate, no fear and no war.
Then there will be world peace in the real sense.