Bob Morris could tell that something was changing with his elderly father: His car was clean, his manners had improved and he had a shine in his eyes. He had a new “lady friend.” Her name was Arlene.

Arlene loved Bob’s father, but she also set clear boundaries with him. She didn’t want to care for him when he got sick and — despite what Bob’s father led Bob to believe — she didn’t want to marry him.

Today, Anna Martin talks to Bob about his father’s last love story. Then, she talks to Arlene herself about a misunderstood marriage proposal and the limits of love.

Today’s episode mentions suicide. If you’re having thoughts of suicide or are concerned that someone you know may be having those thoughts, the number for the National Suicide Prevention Lifeline is 1-800-273-8255.

Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app.