From that game that would be my favorite pairing ...Cloud and Tifa I pretty much saw as old friends...Aerith brought out emotion from Cloud which is something I don't think Tifa really did and I really liked that.
My favorite pairing doesn't technically exist yet...so I'll just have to revel in the Clerith one until Versus comes out
My favorite pairing doesn't technically exist yet...so I'll just have to revel in the Clerith one until Versus comes out