Is he jealous or just aloof?

So, short story. My ex and I (five years broken up) recently have been talking again. Hung out a couple times, blah blah. We've exchanged a few of those eye contact moments and shit but I can't tell how he feels.

Anyway, two days ago he was swinging by and I was waiting in my driveway and he hit the curb. Later he texted me he 'gor distracted by short shorts hahaha, just kidding' then started a stream of texts about summer, his tatas, and lack of sex life' essentially.

Today my boss drove me to a work function and I texted my ex a joke about it. He replied with 'haha you're funny' and then another 'maybe he likes you'. Is he jealous or does he just not give a crap?

Ask for more info if needed. I just want to figure him out.
Is he jealous or just aloof?
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