He’s already on a dating app…?

I care because I take things to heart and don’t use and abuse people or lie to them. Bf of 2 months dumped me randomly and said he is emotionally unavailable, how he’s not over his ex, leaving for deployment, etc. all after we agreed to be exclusive. I was crushed cuz I didn’t see this coming, and the split was a week ago? Anyways I have had a fake dating app profile and came across him there…curiosity hurt my feelings cuz now idk if he was being honest with me? Or he’s looking to fill a void? Told me to my face “I have a fear of commitment and sorry to have wasted your time, and how I was right about his lack of reciprocation” after he said he wanted something serious. So why would he be on a dating app??