This is what the beginning of the relationship is for, learning about each other and what to expect. You talk about how wonderful he is and then point to a clear cut case of him not being that. It's never fun to realize that things aren't going to work out, but that's what it means to get to know someone on that deeper level. He has shown you, consistently, what to expect from the relationship. You have responded to this knowledge with unhappiness. He responded to your unhappiness with a short term fix that led right back to the original problem. As it always will, because that's who he is.