After much thought on how I was going to make my garland, I decided to use a cream colored cotton yarn to join them together. I thought about creating a chain in the same red yarn but felt it might take away from the hearts themselves. They are small in size. I just weaved the cream colored yarn through the back of both "humps" at the top of each heart. When the hearts were all on, I hung the garland and then adjusted each heart by sliding them to the left or right until I was happy with how they looked.
I love my new garland. To me, it is perfect. And even though my snowmen are still up in the living room, it is Valentine's Day in the dining room.