What's your Number? (Colin Shea ff)

Brook has just moved into the apartment next to her sister Ally's and she couldn't be more disappointed in herself. She just got fired and doesn't know what to do with her life. Brook is a very insecure woman who wanted to loose her virginity to the love of her life but it doesn't work out that way. So she try's to find the one ex boyfriend she had that made her happy so she can at least say that her true love was her second. Meanwhile Ally's trying to find all her exes to see if one of them is the one. She gets the help of her sister and the guy who lives across the hall from Brook, Colin. Also does Brook start to have feelings for Colin?