Should I confess my love for a girl I have known for 8 years?

[Joshua S]

I have known this girl for nearly 8 years, specifically since the 6th grade. Well call this girl "Jessica" During the first few years, I have always had a little crush on her. During high school, we became pretty good friends. I dated a friend of hers for almost 3 years, and would consider it "high school sweethearts." But during high school I still always had a little thing for Jessica even though I was in a relationship. I became single after high school, and until now I am single. Jessica and I have been working together at the Olive Garden for almost 14 months now. At work we have interactions that include, touching each other slightly when we walk pass each other. We always engage in conversation. She always remembers past encounters we have at work, parties, and even small conversations we have through text messaging. We like to make fun of each other sometimes. We ALWAYS make eye contact at work, and I seem to be always catching her looking or at me and vise versa and we hold a gaze for a more than usual amount of time. Sometimes she will smile at me, and sometimes we just stare into each other and encounter each other later. I truly feel at times that she has some attraction towards me, but I also feel that its not possible because of how out friendship has developed. Also my ex and Jessica have minimal interaction during this time we have been working together, and ever since me and my ex have broken up me and Jessica have became closer. I am crazy about this girl, and there are times when I can't stop thinking about her. She is moving to san francisco in a little less than a month, and I don't know whether I should tell her before she leaves or just not risk having our friendship become awkward. She actually knows I had a crush on her back in the 8th grade, and we kind of just make it a joke if it ever gets brought up. If anybody has any input, please let me know. I'm sure I can think of more detail If anybody is curious.