It doesn't matter if people think you are the perfect/cute couple. These people don't know what has been going on. The fact is, he is sorry because he got caught. He would likely still be reaching out to these people otherwise. He had no right to send nude pictures of you to anyone. That in itself is bad enough. He is either gay or bisexual, that seems obvious. He needs to face his own truth. You have some hard decisions to make. The only thing I can say is to do what is best for you. Not him. Life is too short to settle, to be unhappy.