Apparently the two met in 1994 when Gibson was filming Braveheart in Scotland. Local shopkeeper, Hawick Dunoon, of West Lothian remembers, "Aye, Susan wa' a wild one then. She an' Mel woold always be a-rompin' in tha heather, sure. Dinna ya wonder where the lass learned to hit tha high notes like that? An' that scene in tha movie where tha boys lift their kilts to th' English? Mel got th' idea from Susan. She wa' always roonin' around liftin' her skirts in front of Mel. Sometimes she'd be waerin' knickers, sometimes she din't. Course, she wa' more of a looker then, too."
Celebrity website TMZ is offering this photo as proof of a relationship between Gibson and Susan Boyle, who can be seen in the third row from the back, holding a big stick and with dirt on her face.