It is difficult, if not impossible, just to try and make the words sweet. Even with the greatest attention only an attempt could be made at a superficial level to make words really sweet. Real sweetness comes when there is love in the heart. This love enables one to be sweet in all interactions.
So, When I have love in my heart for others as well as for myself my feelings are always filled with good wishes. I will experience the inner sweetness, which then spreads around to others too. When I have good wishes I will be sweet in all my words. Thus I experience the sweetness of relationships.