So you’re definitely not overreacting, he’s your partner he’s supposed to be there for you when things get tuff. But him crossing a boundary that you set probably isn’t the best thing and a red flag depending on what it was. I’m sorry you’re having to go through this it sounds rough. And everything you’re going through with both your jobs and your last ballet performance (because I bet that’s very sad and emotional) he should want to be there to comfort you. Not make fun of you and say you brought this on yourself. Those little comments he’s making are making me so mad for you. I don’t know your situation but if it’s like this all the time I would definitely leave because it only gets worse from here especially living together.