Jerry Stiller was 42 in Lovers and Other Strangers when he played the character 'Jim'.
That was over 54 years ago in 1970.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
In 2020 he died aged 92, starring in 56 films in his career, 55 of those after Lovers and Other Strangers was first released. If he were alive today he would be 96.
In Lovers and Other Strangers, I think Jerry Stiller looks: