MaskedDream wrote:He said he did it because he got scared of how serious our relationship was
If that's his reason, then you have to ask yourself how YOU feel about how serious the relationship was. Chances are he's not going to change how he feels about the depth of the relationship without some time. If you were fine with it at the pace that it was, and he obviously wasn't, there's still going to be a lot of unrest between you two if you get back together. One of you will be unhappy with the state of things.
If you feel it was too serious as well, then maybe agreeing to keep it casual and lighthearted will work for you two.