Don't allow anything like that to bother you. Nothing is set in stone until you make it so. Not saying that to concern you. Just simply saying that you need to distract yourself and focus on something that will make you happy. Ignore that reality, make a new one with you and him, happily ever after. Focus on YOU alone with him as you and he ARE together already. That? That was nothing.
Take this example. There was a man I was in love with my entire life. Brother's best friend. EVERY time he broke up with someone, he came back around. When we were young, it was every few weeks, lol. He even got married when he got older. Part of me thought . . . this is really over. Guess what? I got better, felt inside one day they would divorce and once more he'd wiggle around me. I KNEW it would happen because I wanted it to. I know I created that because I wanted it so much. Sure nuff, few years later, that happened. Do you know why it finally was done? I was done. I saw him as a person I didn't want anymore. I saw him as he was and that he wasn't the one for me. Otherwise? Would've kept coming back around. And once in a bit? He does still keep coming back around. I am the one who keeps it from happening.
So don't even focus on what you saw! Keep affirming you and he are together to yourself, listen to happy songs, focus on yourself, making yourself better and that man is going to come after you like a dog in heat. ;)