Likewise, is Sephiroth a time traveler?
Sephiroth after the events of Advent Children has found a way to time travel to the past. He time travels to Midgar just after the first mako reactor explosion. He meets Cloud in the back alley (which doesn't happen in the original FF7) and talks to him.
Likewise, does Aerith love Cloud or Zack? Aerith fell in love with Zack's fine spirit, a spirit that Cloud inherited the day he died. It is a bit of cruel irony that Cloud meets Zack's former lover in this way. But Aerith never knew Cloud she knew Zack. She loved Zack, that's what drew her to him.
Thereof, is Aerith from a different timeline?
Aerith senses Zack and Cloud's presence, even though they're (seemingly) in another timeline. However, there's a brief moment where Zack is seen walking toward Midgar as he carries Cloud. At the same time Aerith, in the same spot but in a different timeline, walks away from Midgar.
Is Sephiroth Aerith boyfriend?
The relationship between Aerith and Sephiroth was later changed to that of them being former lovers. This was likely still during the point of development before Zack had been created. These relationships were all dropped and the two of them don't interact much before Sephiroth kills her.
