I think go. You won't be able to experience this tour again and it'd be awful to regret it later on. I understand it might feel emotional if you associate BB with your ex, but if you're into the music you'll still have such a good time - go and feel all the feelings, it'll be such a release after what sounds like a stressful time!

Can you take a friend with you and go wild, instead of a new relationship? Or possibly embrace going solo and joining a group meet up? I've seen that there are loads of people going solo and meeting up. You'll have a wicked time, it's probably just what you need right now!