I keep forgetting it's called Unexpected Lovers, tbh. All I see is the cover page and my brain fills in the blanks with "trucker wives." Probably because of his Big Mac series.
I tried to search for the original erotic story Fobbi used as script to draw it (a creekside story by John Ashford) but was never able to find it. At least if we could find the story we could know how it ends (that last line "... pretty soon you gonna have one more in you too" gave me hope for a gangbang and DP to happen...)