Good morning. I am happy to assist. It sounds like there is a bit of insecurity in both ends on how to move forward. Do you feel that it would be too inappropriate to move forward with him and just be specific? Maybe saying to him, "I am curious about how you feel about how things have been going. I know we are colleagues, but also friends, and I believe that friendship is a good foundation for building. Would you like to possibly go out for dinner or drinks, not just as friends, or colleagues, but as adults interested in one another?"