Why is he still watching my stories when he has someone?

So this guy I use to speak to, I hit him up again, not knowing he has someone now! He was talking to me normally. Also said “I guess we can be friends again.” As we had a fall out. So then I just asked him “how’s things with your fam?” He ignored me so I said “if you don’t wanna talk just say so I can move on.” He then responded “sorry I didn’t mean to ignore you, but I’m seeing someone and I’m not trying to disrespect her.” I then just said “sorry I didn’t know, I’m happy for u.” He put “thankyou.” And I ignored it. However he’s watching my stories of me within seconds and watching stories of me in revealing outfits multiples of times. I don’t understand.
Why is he still watching my stories when he has someone?
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