Why is my ex doing this?

We have been no contact for about two years.. even a bit over two years. I removed him off of quite a bit of social media. He has a new girlfriend and over the past few months, he’s started to like my posts. Why is he doing this? I can imagine if his girlfriend was aware of this, she wouldn’t be too happy about it. It makes me worry about her. Him and I broke up mutually. He wasn’t ready for a labeled relationship. We were 19 and now we’re 22.

Why is my ex doing this?
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