When Passions Collide (1997)

When two young couples, Lisa and Ryan and Jack and Cindy head for the hills for an intimate weekend at a remote country house, things are looking steamy. Unfortunately, while three of them are looking for carnal fun, Ryan is more interested in writing his new book. But the fireworks ignite when the irresistible force of passion confronts the barrier of Ryan's inhibitions. Soon relationships are tested beyond the breaking point and sometimes, the quiet conservative types pack the biggest surprises.