I do agree with what it has been said before.
It doesn’t seem as a healthy relationship when from the beginning he’s pulling away and doesn’t offer any explanation.

Somehow did you make him know how you feel? Which was his response if so? You say you love him a lot so why don’t talk to him right away? Because, if you don’t get any kind of valid explanation that may make you feel comfortable with or work on it, it won’t be worthy your suffer in the future.