so Gladio and Prom are in a rocky relationship but after Altissia they have a big fight and with Gladio so angry he breaks up with Prompto after saying somethings he knows will hate the other he regrets this but before he can make things right Propmto is thrown off the train kidnapped by Ardyn

+if when they find Prompto he is in a really bad way
++Ardyn taunting Gladio about what he did to Propmto (aren't you happy he's much Quieter like this did't you say something about that,ect)