It’s sometimes the case when two people are in love but, hesitate to say how he or she feels. One of the reason for this is the fear of rejection. In our society today trying to talk to opposite sex is not what it used to be. We have become isolated in expressing our feeling. My advice to you is to write this man a personal letter, not email letter is much personal. Expressing your feeling to him with confidence and believe. I think he will be proud to read your letter and eventually open up. One thing you can do is to figure out is what both of have in common. Commonality is very important because you have something you can share and enjoy. Playing the mind or guessing game will not solve your problem, just my advice haha;} You can do it and let me know. Wish you all the best.