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AeriS' last name is Gainsborough.
Zack Fair was in love with Aeris/Aerith Gainsborough.
Cloud was never 'in love' with Aerith. He does care for her as much as the rest of AVALANCHE. Or as much as he does for Zack.
Cloud Strife does not have a girlfriend in the Final Fantasy VII franchise. Although he is close with Aerith/Aeris Gainsborough and Tifa Lockhart.
Aeris - airline - was created in 1999.