Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: So the problem is exactly as it's above. My friend thought it was a good idea to post a picture of him and his friend H (who is incidentally my girlfriend, but I know he has no ill intentions) with a cheesy romantic caption (a joke, according to him), on the day of his 2 year anniversary with his girlfriend, M. According to him, M had agreed to the picture being posted, but I'm assuming he said nothing about the caption he would use, or the picture just being H and him awkwardly staring at each other, a picture that would definitely look wrong to a fourth person not in our friends group. Now he wonders why M won't talk properly to him, and believes she's being childish. So does my girlfriend H.
 
But I side with M. It was 1 out of 365 days of the year, and supposed to be their special day. 
AITA in doing this, or is he wrong?

believeing that my friend was wrong to post a picture with another girl on his 2 year anniversary with his girlfriend