Was my ask reaching out cos he cares about me or because he wanted to find a reason to stay in touch?

Anonymous
When me and my ex broke up, I didn't want to stay as friends because it was too weird afterwards. But we've been together for a long time, so even though I didn't have feelings anymore, I still felt sad because I was used to being with him. After our breakup, I started missing him (that was just when we broke up so it was still fresh), and I wrote a message about us trying to make it as friends. Right after, I regretted it because I thought it would be like leading him on and at that point, I still felt strange around being near him so regretted sending that because I didn't know if I could realistically be friends. I deleted the message right away.

Two years later, he all of a sudden texts me, wishing me happy birthday. And then months afterwards, he sends me a random text asking what I deleted in the message.

Was I wrong about being upset about this? Cos if I deleted the message, it wasn't meant for him to know, so I felt like he was crossing a boundary. Like it was wrong for me to text, but that was literally right after the breakup. His reasoning was that he just wanted to check up on me and see if I needed anything since I sent something and deleted it and then he went on about liking to help people. But afterwards, I felt very awkward cos I felt like he wasn't being genuine about his reasoning. Like is it right that I feel upset that he just wants to know what I deleted and his reasoning is that he's trying to be a nice person? I think the reason why I think it's not genuine is because years after the text, he just out of the blue brings it up.
Was my ask reaching out cos he cares about me or because he wanted to find a reason to stay in touch?
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