To explain the unconditional love and unconditional respect thing in another way:
A husband must love his wife, and steadfastly value her preciousness, her inestimable worth even when she does not, and despises herself. Even when she has such a low self image that she lets other people use her, or when she won’t ‘get over’ her depression and keeps eating and won’t groom herself and keeps making negative comments and is a mess.
Likewise, a wife must steadfastly believe in her husband’s integrity, even when he does not believe in himself anymore. Even when he considers himself a failure, or doesn’t have it in him to do what is right and just and good. When he is despairing, and is tempted to cave or cow or compromise to evil. Even when he has, to believe in the man he once was and may be again.