I found the pattern for these pretty hearts at yarn pumpkin. It is called granny sweet heart. The pattern can be found here. Thank you Nancy for this wonderful pattern. I am not able to leave a comment in your blog for some reason. It is really such a sweet pattern.
I was planning to make a garland but something else came up and I ended up making only 3 hearts. Later on I will make some more hearts and make a pretty little garland.