My ex is sending me mixed signals?

Me and my ex have been broken up about a year and a half. We’ll snap for a few days then normally stop. We’ve been doing this since we broke up. He’s always been the one to snap me first when we talk again. But this time I decided to snap him first. And he’s been really flirty which he normally isn’t when we talk. Yesterday he even invited me over but I didn’t go because I was busy. With all that being said, he hasn’t been snapping me first since we’ve been talking this time. He has a couple of times but that’s it. And he’s constantly leaving me on open. So what should I do? Should I just keep snapping him or should I just give up?
My ex is sending me mixed signals?
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