Do I just send him a message?

Had a situationship with a guy for three months a year ago which ended in him ghosting me. Well yesterday he added be back on snap and today he added me back on tinder, I’m genuinely so curious to wtf is going on inside his head. Should I just straight up ask wtf he thinks he’s doing? He hasn’t said anything yet, but it’s obviously not a mistake when he’s added me on two different platforms on two different days. Other option would be to just remove him from everything because why would I put myself through the embarrassment of seeming like I care… but I’m soooo curious