My boyfriend always breaks up with me during every argument, is this abuse/manipulation?

Its getting a bit old now, and I'm sick and tired of always crying by myself/wasting my energy when he clearly doesn't gaf. I'm 23F and he's 23M, we've been together for a year and a half and everytime I bring up an issue this always happens. I asked him why he always breaks up with me and how I'm supposed to trust him in the future if he keeps breaking up with me/ignoring me, and he always just goes quiet and it goes nowhere. Then he says he's not sure what I want him to say and that he's 'scared' of my reaction... rather than actually talking things out it just gets pushed under the rug and I'm forced to chase him every time and I'm just sick and tired. How do I make him care? He always blames me at the end of an argument and changes the subject etc.
My boyfriend always breaks up with me during every argument, is this abuse/manipulation?
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