Is this just his way of saying “I’m interested but not that interested”?

A co worker of mines approached me. We have been working together for a year and he decided to finally talk to me and ask for my number. That was about three months ago. Nothing has really happened. We text then and there. We flirt, buy each other lunch but nothing serious but he hasn’t offered to take me anywhere outside of work. He attempted to once but our schedules didn’t align but he never tried again. He dropped me off after work once but that was it. He often says I live too far and that if I didn’t we would hang out more outside of work but to me it just seems like he’s isn’t interested enough to go that extra mile. As the saying goes “If they wanted to they would.” Which is fine but he often tries to make it seem like it’s the distance keeping us from getting to really know each other but it seems more like an excuse. Something tells me if he felt like I was gonna put out (have sex with him) he would but I don’t cross that line with him. All our flirting is casual.

Is this just his way of saying “I’m interested but not that interested”?
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