The ridicolous reaction to the last photo (spoilers)
When Finn finds the 'new' photo which has replaced the photo in which his best friend had sex with his girlfriend.
A photo that paints their home out as a crime-scene with police tape all over the place he goes 'pfeww! what a relief, I was so freaked out when I found out you were gonna have sex with my buddy'...
Like yeah, your friend doesn't have sex with your girlfriend in the 'new future' BUT dude your house is a CRIME SCENE, that means that the cops have been there and is most likely suspecting you of the murders that you uhh commited... OR your body could be in there somewhere in a pile in the 'new future'... But hey, at least your girlfriend doesn't have to bang your friend
We crash into each other, just so we can feel something.