Me and my girlfriend helping our friend after a breakup [MFF]

A few weeks ago my girlfriend Anna got a text from her best friend from her sorority in college, Sarah. She had just broken up with her boyfriend, who she found was cheating on her by texting and DM’ing other girls on the side. Me and Anna felt really bad about this because Sarah is a sweet girl who had been cheated on in the past. She had become just as much my friend as my girlfriend’s, and almost like a little sister, so I brought up the idea that we could have her over, maybe take her out to dinner and just help her through her breakup. Sarah agreed, and she was going to come to our place and spend a night.

Me and Anna talked for a bit about how bad we felt for her and plans on what to do, what to cook, etc. We also got around to talking about how anyone could cheat on Sarah, who is probably one of the prettiest girls I’ve ever met in my life. 5’1, gorgeous eyes and smile with maybe the most perfect ass I’ve ever seen. My girlfriend is bi, and we often watch porn and get off together to all types of content (masturbation, vanilla sex, gangbangs, lesbian). One rule we’ve always had is that we won’t masturbate to anyone we know in real life, but we’ve both openly admitted that we thought Sarah was a real catch. My girlfriend even said that she had a crush on her when they met. Sarah was bi too, so they often talked about guys and girls they thought were cute.