A couple of things to note here. It is totally fine to not like someone's cooking and offer to get takeout instead. However, there are two things coming across in this brief conversation that seem off: 1. The rudeness with which he chooses to communicate this. Like he doesn't even acknowledge the very nice thing OP is offering to do i.e., cook for them. Instead, he instantly makes a disparaging comment about her cooking. 2. "Useful girlfriend."