I just got a save the date from good friends who are getting married 5 days before the ethics bar exam I must take this summer. Its a big deal to pass this test, and its a huge deal that they are getting married. I'm not sure I can make it due to this conflict, and my friends are saying I need to go, my FI says I should focus on the bar. I'm not sure I can go, is that totally selfish and unreasonable? Is this making me a bad friend?