Since we're forced to choose an exclusive "girlfriend" going into S3, will there be a way to get back with any of previous options? Like, if I chose Sage on a neutral affinity, will I be able to get back with Jill in a later episode?
In general, probably (but not definitely) not. There are specific combinations that seem more likely than others:
Getting (back) with Jill on a Bella path seems pretty likely - or at least has a fair bit of setup in place.
Getting (back) with anyone on a Sage path seems at least possible - she's hinted at being open to sharing, and has participated in a threesome.
Getting with someone on an Others path seems at least possible, particularly if you haven't actively broken up with them. Hooking Maya or Josy following their breakup is a good candidate.
Yeah that part of the story makes no sense, Colleges in the US don't even want to deal with parents unless it parents days. DPC really fuck Maya over
When I went to university here in England, last century, halls were mostly coed. They required card keys to access, but any student at the same college could get in. Individual rooms had key locks, so someone with a copy of a room key could generally get access just by following someone into the building (easier or harder depending on the number of residents of that building). And some places theoretically required card keys to access, but only out of hours, so someone could wander in during daylight so long as they looked like they knew where they were going.
So, while Patrick having a copy of Maya's room key would have been unusual (and a red flag for uni security unless he'd somehow managed to get one officially) his being able to get into her room using one wouldn't have been cause for comment.
Of course, his using the key to let himself into his daughter's shared room in the evening would have raised concerns if anyone noticed.