boyfriend makes me feel bad

I facetimed him today and hes all nasty because he was playing video games which i didnt know. He was like "well im busy and you ruined my fun" i was like why did you answer and he said because if he didnt i would get mad... i was like are you kidding i never get mad at him and if he called/texted me that he was busy i wouldnt care. This happens so many times and he always puts me down i dont understand what his deal is? What do i do now i feel bad for interrupting his time