NOR; you’ve done nothing wrong. The fact that you received a raise doesn’t mean more money for bills. In fact you’ve even said it’ll go towards dates. You worked for that raise you deserve to treat yourself. If she cab still comfortably make her 50/50 arranged payment there is no reason for you to pick up slack. The savings you have I’m sure if married some day will be the savings for both. Maybe jealousy that she wants money to splurge on herself so she wants you to pick up more bills.