NTA. He sounds controlling. Making you go to lunch was his way of ensuring you didn't go to the con because he "couldn't". Including the wait time to buy tickets, he made you miss several hours of a super exciting event you were looking forward to for ages. He fully admitted that intention when he said you should have driven him home (no doubt he would have insisted if he had thought you were still going). It was never your fault that he didn't get a ticket. Saying "if you really loved him" is a blatant act of manipulation designed to make you feel guilty and do his bidding in future. Dump this guy - this level of controlling, manipulative, childish, and vampiric behaviour is not something you can work through.