My sisters, Ayana and Kerissa. These two have been on and off roommates since 1996. Sister relationships are simultaneously complex and simple. I know this from personal experience, and also from the semi-objective observation of my sisters' relationship. At the end of any given day, a sister loves the way only a sister can - it is something quite special. I spent last weekend with these present-day roomies and they helped me to forget my troubles for a while. I am so grateful for them and I hope will have many more days and adventures before us.