for the first one, you sucked off Gunnar yet? pretty sure it only appears if you have a sexual relationship with Gunnar.
for the 2nd one, I think it's about when you tell Toben (the merchant) about Gunnar not being trustworthy (forgot the entire detail), Toben just dismisses you, but Gunnar is pissed and made you suck him as a form of asking for forgiveness iirc.
if you already did those stuffs but the dialogue option still haven't appeared, then I don't know how 😅