Do the two of you have some sort of plausible plan to live in the same city in the next few years?
Do you have the ability/willingness to travel frequently to meet each other until (1) happens?
If you don't have a pretty strong "yes" to both, I'd say don't do it. You can make it work without one or both of those things, but the odds are heavily against it, and giving up on real, in-person human connection for Zoom calls is unfulfilling and frustrating.
If you don't have a pretty strong "yes" to both, I'd say don't do it. You can make it work without one or both of those things, but the odds are heavily against it, and giving up on real, in-person human connection for Zoom calls is unfulfilling and frustrating.