my boyfriend lied about going out. what should I do?

My boyfriend and I of a year now are in a long distance relationship. He is in new york and I am in Boston. In the begining of the relationship and middle he was such a great person, he went to church every sunday and we has so much fun together. He used to do little things for me and I would do.the same. Now.everything has changed, he doesnt go to Church and he lies about petty things. On valentines day we went to breakfast, and in the middle of breakfast his friend calls and we stop everything we are doing to just help his friend with shoving his car. There wasnt that much snow under his car, he couldve drove over it. And he used to never go out. His two friends are djs and they throw parties. He told me that he was home and I callled him at night, we usually have a conversation before we both go to sleep, no answer, I call him in the morning. he said he missed my call because he was sleeping. I go through his gallery to find pix of us together and I find a picture of him n his friend at a party on the day he said he was sleeping. I approuched him about it and he said he loves me and want to marry me and im over exaggerating and that its stupid that its mad. It was like he was inconsiderate of my feelings,.I asked.him why would you lie to me about something little like that.. And I tood him how it makes me feel and he says that he relly loves me and he would do nothing wrong. I told him to leave and go back to new york, he did. Do you think im overreacting? Or.am I right