Simplify the following text for a Grade 7 native English-speaking person.
Original: It is often claimed that `` Wonderwall '' was written for Gallagher 's then-girlfriend , Meg Mathews ( Gallagher married Mathews in 1997 ; the couple divorced four years later ) .
Simplified: It is said that `` Wonderwall '' was written for Gallagher 's then-girlfriend , Meg Mathews .