yes! for the ex i was thinking it was something that happened from when they were juniors in high school until senior year or even could have been a shorter length of time. she's got a very co-dependent best friend situation with a guy, and i was thinking that plus the fact that she just doesn't know how to openly communicate her emotions (even less so back then) would have caused some tension between the two of them with her not seeing what the problem was which led to their inevitable break up. as for the roommate, i didn't have anything too specific in mind just the fact that they rent out a house and have all been living there together either from when they were in college or after that? so that one's a lot more open ended but those are just general ideas and if you're even remotely interested i have no problem tweaking certain things!