Does this mean he misses me?

My ex and I got back in communication after a year. Only via text as he lives a long way away. My friends say he probably realised what he lost now. He hasn’t had a girlfriend since we split but knows I have.

he's been:-
1. Telling me he’s thought of me
2. Reminded me of sentimental times from the past
3. Sent pictures of his family who I liked and who liked me lots. Especially his grandma
4. Told me he had more fun with me than going out to clubs

i don’t know why he’s doing this but I want someone impartial to help me please
Does this mean he misses me?
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