Thank you everyone for the helpful advice. I recently found out that he had met someone else and didn't have the courage to tell me the truth. I wonder how well this girl can take his ********.

My boyfriend of four years dumped me during the holidays. We got into a fight about something so trivial with what I was cooking for dinner. He then told me this wasn't working and he wouldn't come back to our home. I feel like he wasn't truly forthcoming. Definitely didn't have any true closure. Unsure of what to do. He changed his phone number. I only messaged him once and called once to see if he was OK. It's now been three months since we last spoke. I just want to move on like he has. I'm having such difficulty with doing so. Why is it so easy for some men to drop everything and not look back?