Shirtless snapchat... What does it mean?

Okay so I've been snapchatting a friend of mine who I've known for years, but I've always seen our relationship as platonic and sibling like, only because he's a few years old than me. But recently he has been sending me snaps like, "brb, gotta shower" and after shower shirtless pictures, not full torso though, and a lot of photos of him working out. He also sent me a bitmoji (personalized emoji) with the caption "goodnight kisses" after I said goodnight. I'm not sure if he's just being friendly or what. I know he cares about me, he's protective of me, so now I'm confused, what do you see his intentions as being, am I reading the signs wrong?
He has a thing for you.
He doesn't care about putting on a shirt.
Thinks of you like family.
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Shirtless snapchat... What does it mean?
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