Mad? Sad? Heart broken? Is it love?

*COMPLETE* Colby is forced by his Mom to BabySit for the neighbor. All he knew is that they had 2 children. A 14 year old girl and a 18 year old. Keira who is 18 and Destiny who is 14. The only time Colby has really seen Keira was before the fire she started at her home which killed her step-mother. Will Keira fall in love with Colby?