I think that they should arrive at the house and then they should have a conversation, you should include humor and towards the end of the conversation you can include Seth saying that he likes her and she says the same. She should then explain that that is why she calls him pretty boy and she always acts snooping around him and you should end it with Seth winning the bet but giving back whatever was given to him for the bet because he and sila are now in love.
Explanation:
I know that sounded so corny but that is just what came to my mind, I love your story and would love to read more stories if you write anymore! Keep up the good work!