It's a Living (1980)

S5E12 A Pen Pal for Your Thoughts

Amy receives unexpected news from her prison pen pal: he’s about to be released. However, the bombshell doesn’t stop there; he expresses his desire to spend his life with her. As Amy grapples with this revelation, she must confront her feelings and the implications of his proposal, leading her to a crossroads that could change everything.