What does “ I’m not looking to jump into anything super serious but never say never” mean?

So me and this guy from work have hit it off a few times at work parties over months, have a great connection at work etc. he’s shy and quite hard to read but a lovely guy! We recently went on a date and slept together.. he said after he wasn’t looking to jump into anything super serious but never say never, and then we agreed to keep meeting up and do fun stuff in the city, I don’t want to rush thing either but I also don’t want to get hurt… how should I handle things?

What does “ I’m not looking to jump into anything super serious but never say never” mean?
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