I guess none of them will work in today's world. You cannot force anybody to love you but loving unconditionally without expressing it properly is also not going to help. Actually a bonding is needed for love to blossom , If this bonding is natural then it is superb otherwise you need to spend some time together , might some magic happens and the bond is created. It will be unconditional love with modified statement like that "I will always be there for you but do not take me granted."