premise: Summer Lovers is a 1982 American romantic comedy film written and directed by Randal Kleiser, starring Peter Gallagher, Daryl Hannah and Valerie Quennessen. It was filmed on location on the island of Santorini, Greece. The original music score is composed by Basil Poledouris. "Summer Lovers" featured "Hard to Say I'm Sorry", a No. 1 hit for Chicago and "I'm So Excited" by The Pointer Sisters.
hypothesis: Daryl Hannah was an actress in a 1982 romantic movie along side Peter Gallagher. 
reason: Daryl Hannah was an actress in a 1982 romantic movie along side Peter Gallagher titled Summer Lovers.  I don't think there was enough information for the system to make a positive determination. 