A guy liking his ex's pictures on Instagram?

Does it mean anything. The guy also abruptly stopped talking to me almost a week ago and it's been crickets since. Then I checked his most recent ex (I was worried they're still together and he was lying) they still follow each other and he liked her most recent post? Does it mean anything. Should I block him 😅I honestly don't know what to do but I don't have a good feeling.

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Oh we have been talking for a few weeks and he made some moves like wanting to face time me etc. It got quite intense and romantic quickly. But now I'm wondering if he is still with her or has feelings for her.
A guy liking his ex's pictures on Instagram?
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