Boyfriend and porn

So late night I was sleeping and all of a sudden my boyfriend starts kissing me and doing all this extra stuff to have sex we have sex and in the morning he pulls his phone out to show me something but I guess he forgot that he had a porn site up and I'm like ummmm and he was um I don't know what your talking about and changes the subject ... I don't know how to feel about that ... Am I overreacting ?