I’m very much a pro TLJ person, but I like their relationship turning into a mystical dyad force.
They already had a force connection before TLJ; Snoke just opened the door for them to actually verbally communicate with it (I guess you could debate on what Snoke actually allowed them to do here, but the point is neither he or Palpy knew it was inadvertently creating a vessel for the dyad relationship to really blossom. “What Palpatine doesn’t know… is we’re a dyad in the force, Rey.”) And the abilities of their dyad are so unbelievably powerful, again, still unbeknownst to Snoke/Emperor, that they can instantly transfer items back and forth through the force itself. Kylo getting water on his face is like a foreshadowing to that, which is paid off with the lightsaber transfer at the very end.
This.
THIS.
This was what I was trying to say!