In Top Logan route, there a event after you finished Country road event. You need to visit his house again and there a event that you can have sex with him. But then Logan who where there will find you out and hate you (give you a black heart) and you cannot get 2nd heart with Ste.
Like TheNamelessL3GI0N said, there a threesome scene between Ste/Player/Korg. After you finished Country road event. There a chance once a week (RNG) that Ste will visit your hut (near the forest). If you have not meet him this week (in game of cause), you can re-enter your hut again until you meet him. I'm not sure with a time but I think you need to do this during daytime.