Welcome Back, Kotter (1975)

S1E14 The Longest Weekend

As Julie embarks on a ski getaway with a friend, Gabe's mind races with insecurities sparked by the Sweathogs’ tales and Mr. Woodman’s comments. He becomes increasingly anxious about the chance that Julie might be unfaithful during her trip. The tension escalates as he grapples with his fears, leading him to question their relationship while she enjoys her time away.