We've clearly played different games.
The sister was crazy in love with the MC, not some no strings bs.
Vicky sure, then again I did everything possible to avoid her and any other women.
The fact the two had a previous fling is irrelevant and is some of the dumbest shit I've heard, by that logic, your and/or your gf/wife/partner are free to go hook up with any past lover without consequence because that previous relationship is baked in right? Nah, fam, cheating is cheating.
The devs screwed the pooch on it and broke their promise of nothing like that happening in this game.
And
Dragon59 please for the love of all things harem stop with your bs about LI enjoying each other. That is not harem, that is poly relationships. Harems are focused many to one. I know this game is not harem, but I've seen you post the same stuff in many harem games. It's got nothing to do with being secure or not. It's the harem fantasy... all the LI's focused on the MC and the MC alone.