I don't know the specific main characters in this novel. But usually, in a novel with a title like this, there could be a protagonist who is going through the experience of the'second time' being sweeter. Maybe it's a character who has learned from past mistakes or experiences and is now in a new and improved situation, along with other characters who play important roles in this transformation.
As I haven't had the chance to read 'Second Time Sweeter A Blessings Novel', it's impossible to name the main characters accurately. However, we can make some assumptions. There might be a central character who has had an earlier experience that wasn't as fulfilling. This character could be male or female. There could also be other supporting characters like friends or family members who either influence the main character's journey to this'second time sweeter' situation or are part of the new, more positive experience. For example, a best friend who gives advice during the second attempt at something, or a family member who provides the support needed to make the second time a 'blessing'.