Dating for a year and still no i love you
I think it was caused by: Because we haven't seen each other in months.
If you can't move in the next few months then come up with an eventual date and action plan to discuss with him.
He is expressing that he is done with being apart from you and although your life may not allow a permanent move right now if you want to be in a relationship with him you will have to make a plan for getting to him within the next 6 months.
You can also counter offer that while you are waiting to get your life in order, he can move to your location if he really needs to be with you.
The first thing that you have to realize is that nobody can make another person do anything in life if they don't want to.
There is no single course of action that is available to make him love you more, whether he is long distance or not.
Instead of dwelling and obsessing on how he expresses his feelings, work on showing your feelings and make a list of how he does treat you with examples of happy moments to refer to when you get frustrated with whether or not he loves you.
He may not show love with words and because you are distant you are missing the opportunity to see his love for you.Stop sending him messages and take your time on replying to his the next time he sends one.