I'm not sure if it is a DLC Exclusive, I heard it from someone else. But I haven't seen any marriage options aside from day one when you make the bet. How do I get them?
ah, I see. So maybe it is indeed DLC-exclusive. I guess I will just wait for youtube walkthroughs haha.
These options will appear sometimes when you choose specific answers (for example when giving an answer about your parents, you choose "meeting the in-laws"). I'm afraid I don't remember the specific instances they appear, you'd have to play through the game again, sorry. But I'm pretty sure only the last answer truly matters.