Karena is so desperately wanting boyfriend number one to come over that she keeps calling him, but he doesn't respond. She is concerned that he's ignoring her for whatever reason. She really needs him to pick her up and get her out of the apartment. But why? Faith was a great friend and listener. If Karena needed to talk, Faith was right there. Always an ear to hear.
If Faith was alive and awake and well, Faith could have called him because it's easier and quicker. She could have smoothed things out. But no, her phone sends just a text. Karena really needs you. More than you know. Karena is desperate, so why doesn't good friend Faith talk to her? Because Faith is asleep. But wait, how is she texting then.
Side note - Where is that word really heard elsewhere in this case? In the 911 call. Really!
Karena, realizing that boyfriend number one isn't responding to anything, resorts to convincing another guy to come get her and take her home with him. She needed to be out of that apartment and it didn't matter who did it. Notice that he didn't come up to the apartment. No need. She was peering out the window or waiting in the parking lot. Probably didn't want him to open the door and wake up Faith.
Well... except that the texts from Faith to BE never used the word "really". The text said "Hey B, can you come over here please? Karena needs you more than you know. Please let her know you care."
As far as KR and BE- that seems to have been a complicated relationship, and I don't think they were an official couple at the time. I think KR
wanted them to be, and if memory serves, he's spent the night with them the night before, so probably something happened with them again. But I think KR's frantic behavior here is explained by him breaking plans with her. We also know JM had a relationship with her, so my interpretation of events is this:
KR and BE hook up previous night.
KR spends all day excited about rekindling the relationship.
Thrill happens, and KR asks BE if he'll pick her up later. He says yes.
He doesn't pick her up when he said (for reasons). She freaks out and calls/texts him numerous times.
Faith hears/sees that her friend is turning into an emotional wreck and tries to help by texting BE too.
Faith sends an appreciative text to TM since he doesn't treat her this way.
KR in a fit of pique reaches out to JM and arranges to spend the night with him instead.
Maybe that's right, maybe it's not, but to me it completely explains everything, and is totally consistent with how I remember people acting in college.