Is anyone else having issues with this questline? Got as far as the flirt whilst in library with Sarah, but then the next scene at lake just won't trigger no matter how many times I visit. Used a ridiculous amount of love potions on top of having done Val's full dating line, so her affection must be ludicrously high at this point, but still not doing anything (she's level 21).

Honestly, we really need a way to track affection, because it does give a huge amount of grief not knowing when trying for certain chains.

EDIT : Nvm. After some experimentation, finally found out issue. Seems if you've finished Val's questline to get her as your girlfriend, the lake scene with Sara won't trigger. None of guides read mentioned this, so was missing this.