Well you need complete the lizard story line with good ending and then talk with rousk about bareshare ( with female mc) after return to the shrine talk with rhot to offer him a new spear, sleep in the shirne, he will visit you at night and after wake up talk woth him and you will able to sex with him
None of those events are affected by the dialogue option "Something for curse" in which you can give him restrain potions, lust potions, corrupted lust potions, ect. I was asking if there are scenes only accessible based on what, if any, option you choose during that dialogue option. In addition, if you don't give him anything, you're backed out to the dialogue menu like normal with the option still avalible for later. Try to back out of that however and you're booted to the dialogue menu with it gone.