You have been dating Shinobu,but these few weeks she been acting very weird,you tried to ask her what’s wrong and the only answer she will give you was “i’m okay” or “nothing”

Today you wanted to hangout with your girlfriend Shinobu,you asked her and she said “maybe later”…weird right..?,anyways,you decided to follow her and she was with someone? you got closer and saw her with Giyu Tomioka…THEY WHERE HOLDING HANDS!?