Amanda & the Alien (1998)

"A young Bohemian artist falls in love with a human-eating alien."

Amanda, an employee at an upscale clothing store, is leading a relatively lonely and unremarkable life. All this changes when an alien that's been held a secret military installation excapes by taking over the body of one of the base employees. Amanda finds the fugitive alien and decides to help it hide from the government agents chasing it, a seemingly easy task, as the alien must change host bodies every few days. Will she be able to help her new companion make a clean getaway?