Is my ex using me or does he actually care about me?

My ex and I try to maintain a friendship, but lately it just feels like he is using me to feel good about himself because he knows I still like him, so I stopped talking to him. After a month he sent me a text asking me why i had stopped talking to him and I said that I hadn't, he then sends links to a few songs (3) in wich one of them is really similar to our situation and in the lyrics it says "I miss her"
Is my ex using me or does he actually care about me?
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