One thing that others seem to think is weirder than I do is the idea that someone might have stopped by FH and KR's apartment at 4:30 AM. I mean, it would be weird (and terrifying) to me NOW, but in college, sometimes I didn't roll in until 5 AM on a weekend night, and not because of a hook-up, just because I was dancing and socializing and flirting and what-not. I did not ever, ever go anyplace to socialize before 11 PM, and I even considered that early. I know it was a week night, but neither girl strikes me as an overly studious type, certainly not as bookish and serious as I was. Karena had just left the apartment not all that much earlier.
So, if someone knocked on the door, Faith may not have thought it was THAT weird, especially if it was someone she sort of knew. Remember these are all people who are dating and looking for relationships and/or hook-ups. They are constantly seeking out the other sex. They are constantly being sought out. They expect the people around them to seek and be sought. It's just what you do at that age -- almost as seriously as you do anything else. It is not uncommon for a college-aged woman to have a few admirers sort of orbiting, and for those admirers to be orbiting multiple women. Some men think it's cute to come by at weird hours, I know because it happened to me.