Do I text my exboyfriend back or not?

My exboyfriend and i broke up like 8 months ago. Through mutual friend i know he had a new girlfriend for two months, but they broke up a few days ago. I haven't spoken or seen my ex at all, except for two occasions. On two birthday of our friends. We didn't ( really) speak to each other those times. After a few days after the break up he texted me saying that he still loves me but the relationship wasn't working. a few days ago he texted me just saying hi, its *name*. I ignored him at first, but Im actually curious as why he started texting me after all this time and what he wants. Do i text him back or is it better to ignore?
Do I text my exboyfriend back or not?
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