I think he's scared! He decided to play on the safe side and to not fall in love anymore for not getting hurt in "the end".
He decided to let go the feelings and maybe did a promise to himself!
I think that only one person could open his heart and give him the chance to change that and I think that person was me!
Me because every time we were together, we talked mentally, believe it or not, we didn't have a specific conversation but I think we both felt that with only an eye contact, and a hug and a kiss of good morning could be enough for a rest of a good day and turning our day happier!
Not saying that we were perfect, but somehow we had a connection, the weird feeling of wanting to speak but your legs start losing the strength, your brain just stopped, the whole world disappearing, just you and him, feeling your heart wishing to jump from your inside of your mouth, and just listening your both hearts beating at the same rhythm!
For this, I'm thankful because not every person you meet is destined to be part of your life, simply some people stay, some people not: Lessons!
So don't worry because at the end you will stay with the people who you really need in your life, now it is all about a journey, later you will have your wall full of stars who will be the people who will remain in your life forever!