sex, lies, and videotape (1989)

"sex, lies, and videotape" is a 1989 Drama movie directed by Walt Lloyd and starring by Andie MacDowell, Peter Gallagher. Ann, a frustrated wife, enters into counseling due to a troubled marriage. Unbeknownst to her, her husband John has begun an affair with her sister. When John’s best friend Graham arrives, his penchant for interviewing women about their sex lives forever changes John and Ann’s rocky marriage.