I was good friends with my current boyfriend for about a year and a half or more. (we met at work). We talked to each other about anything and everything and did a few things together outside of work. We flirted and played around at work just goofing off...
...but neither of us thought anything was going to come of it because he had a wierd girlfriend situation and I had a very emotional, very strange "relationship" happening at that time. both of us were blinded by those relationships...
...somehow though, things became more serious and here we are over a year later, still together despite all the people who gave us so much crap and all the painstaking struggles, but its been worth it. hes still my best friend and more...
...anyways enough about my situation. If you think he feels the same, go for it. If he has a negative response, things may be strange between you two but life goes on..good luck though..