Friends (1994)

S1E2 The One with the Sonogram at the End

Ross learns that his ex-wife, Carol, who is in a same-sex relationship, is expecting a baby that he fathered, but he is not fond of the last name she has chosen for their child. Meanwhile, Rachel discovers that her former fiancé has taken a trip with her maid of honor that coincides with what should have been their honeymoon.