<human>: I live with my parents, but my brother has his apartment, his girlfriend has hers, mine shares with roommates (out of state). My gf (Jessie) was visiting for a few days last week, so my mom convinced my brother to lend us his apartment. He stays with his gf, Jessie and I stay in his apartment, very straight forward.

Day Jessie is supposed to leave, I give her the keys before I go to work. My parents pick her up, drop her off at the bus stop, she gives them the keys to return to brother. I get a call from my brother, saying his gf thinks he's cheating because of some flowers we left int he apartment.

What?

After talking to my brother, and then again to Jessie, here's what happened: after I left, she went to the store and got some beer and flowers as a thank you for letting us use his apartment, signed it from both of us. My parents dropped off the keys with Rob's (my brother) gf because he was out. She went to do something in his apartment, found the flowers and got pissed off.

Now, I could KIND of understand her mistake, except for the fact that Rob was with her the entire weekend. He got me on the phone to say yes, we were using his apartment. Parents told her yes, they picked up Jessie from apartment and knew she and I were there. Jessie offered to say something, but I want to keep her out of it if I can.

She's no longer showing anger, but Rob said things are still kind of tense between them. I don't know if I should say or do anything?

Can you give me a shortened version of the text?
<bot>: GF and I use brother's apartment. Brother stays with his gf. His gf now convinced he was cheating.