So Jesus lied? "in these two commands all the law and prophets are fulfilled"
If i love my wife, why would I ever cheat on her or disrespect her? WHy do I need a law which says do not commit adultry (I already know thats a sin any way, what power will it give me to not sin against my wife, it has no power to do that)
If I do fail, and do sin against her, it is because I did not love her, I put my needs above hers, and became carnal (self serving) in my thinking.
Not because I did not obey some command. That foolishness.