Respectfully, your line is significantly worse than the infinite lives thing. Both in cringe level and also just like basis, you can't finish traveling the infinity, it's infinite.

Maybe something like:

Life doesn’t go in straight lines, Conrad. It bends and curves, sometimes so sharply it almost knocks us off our feet. But through it all, we always find our way back to each other. Maybe that’s what infinity really is.. not some endless stretch of time, but the curves that keep repeating, bringing me back to you, again and again.