Why does he text me randomly with videos and teasing?

I do not know him very well, I do not consider myself close to him but a mutual understanding about him. He was somewhat persuing me a few months ago but he lost interest due to me being too sensitive for his jokes (He joked and teased me every day, I tried making normal conversation with him a few times but went back to the usual. It was taking a toll on my mental health too so I stopped interacting with him as much).

Since then everyday or 2 or 3 days he will message me some videos he found funny, he will try to scare me a little through the loud sound notification on my computer and we will tease each other a little (light hearted, I am fine with it). Im not sure why he does this, when I try and talk to him he does not seem interested in talking at all, but when he messages me he is interested.
Why does he text me randomly with videos and teasing?
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