Here the promise is of faithfulness - I will stay in a One to One relationship, nobody else will steal my heart or may possibly have the meaning of I have locked it against all intruders.
The heart or multiple hearts represent love and affection and could also have the meaning of My heart is yours or I offer my heart to you.
These go with the padlock - my heart is locked up for you or locked together with yours and could also have the meaning of I give you the key(s) to my heart or even a modern I offer you the key to my house - come and live with me!
Here the modern meaning is to steer a safe course through our lives together or to guide our lives together on a safe course. In the old times, the wheel (found on the farm cart) would also go with a spade to give a meaning of ‘I will provide or I will work hard.
The Comma or Commas
The Comma represents the soul and has the meaning of Deep or Great Affection towards the recipient.
This symbol shows that the giver desires to hear the happy sound of wedding bells or - if the object of love has said “yes”, then to celebrate a forthcoming wedding.
The Two Spoons with Embedded Hearts
A happy loving couple. The spoon itself speaks of “providing” while the hearts say “I love you”. Two spoons with hearts could be saying “We will be together, loving and providing for each other”