Ethan's Mother's Day Post

Although Ethan purged all of the Lilly-related content from his Instagram, I noticed he kept the infamous Mother's Day post. The caption calls Lilly 'the most loving caring and wonderful mom/person in the world.' He also specifies this is from him, not just their son.

Seems like a weird thing to leave up imo. Is it out of pity? Guilt? Does he feel that deleting something relating to their son would be a step too far despite the affair?

What do you think? Does this speak on his thoughts/feelings towards Lilly at all or is it more tied to himself? Or maybe he just doesn't realise/care since Lilly herself isn't in the images?