Need help on finding a certain doujinshi / manga <3

Hey guys, does anyone know a manga/doujinshi, where a guy gets lucky with a wife, whom he is jogging with? I think the guy got a boner looking at the wifes behind while jogging, and she notices it and tells him that's normal / natural, since it's early in the morning (I am not sure about this part tho)? The husband doesn't know it since he isn't that fast and can't catch up while they jog. You can see him super exhausted on one of the last chapters, without having any clue.


Any help would be very appreciated. Been looking around, but can't seem to find it... at this point, I am not even sure it even exists, lol.

Spring Morning Wood by Karma Tatsuro

Thank you very much luckydog001! That's it! I really appreciate it ~!