What do you guys think his intentions are?

This guy who I am cool with (we’re just friends) nothing has ever happened between us. We have been co workers for about a year now. He puts out little bread crumbs from time to time by flirting to show that he likes me but I don’t entertain it. He’s some what of a ladies man so despite the fact that he’s a nice guy and nice looking I keep my feelings out if it and choose to keep being just friends/sisterly with him and not take our relationship beyond that. Most recently while on lunch at work he was scrolling on facebook on his phone and he just kept randomly showing me sex/freaky post. One post said “No man can f*** three times in one night.” I laughed at them but in the back of my mind I kept wondering why he was showing the post to me. Then after showing me one or two of them he began to over explain himself by saying “I’m not trying to be weird or anything. I just figured since we’re cool that it’s okay. I know you’re probably thinking I’m trying to tell you something but I’m not.” Which was odd because why would he have to explain that if he knew his intentions?

What do you guys think his intentions are?
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