Guys, What does it mean when guy says I value you way too much to date you I don’t want to loose you But has given up girls for not wanting me around?

Like he will turn down any woman if it meant cutting me out so I feel mixed up and it’s upsetting because I have the faith in us that if it wasn’t working we’d be friends we are ( best friend for more than 15 years) he said if I wasn’t in the FZ he could never talk to me he wouldn’t know how I guess in his to woo me? so I’m confused did he friends zone me because I’m hot or does he not want to date me and risk loosing me or what. He wants me to move in and live with him and is willing to take me wherever it is I want to go ( I’m legally blind) but doesn’t want to date me does he not know what he wants he’s doing conflicting things he likes being catered to like a boyfriend what’s going on? Help! When asked he says he fights himself to control himself to not cross a line soooo it’s not the lack of chemistry nor his urge to cross lines? I don't know I’m confused.

Updates
7 mo
He keeps asking me why I always bring this up, but I tend to feel stupid because while we are best friends ( and that’s fine) I feel chemistry and I know people see it and are like okay? And my viewpoint is I don’t want to loose this I rather date him, than loose my friendship altogether dating someone else.
Guys, What does it mean when guy says I value you way too much to date you I don’t want to loose you But has given up girls for not wanting me around?
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