I guess I would still go since you want to, and don't worry about what H thinks it means. If he does something or says something you object to (eg, puts his arm around you or tries to hold your hand or whatever, just tell him as calmly as you can, that you're not ready for that). If he says something like "See? Isn't this great? We can have fun together?" either ignore it if you don't feel compelled to set him straight, or set him straight as gently as you can while being honest. So, you might say, "H, you know I love this band, and I am glad we got to go, but don't read too much into what my being here means for our situation. We still have many issues that need to be addressed, and going to this show together doesn't change that, ok?" Something like that. Just my 2 cetns.
Nomo
PS - I responded on my thread to your comments about the kids issues.
M 39 W 39 M'd 10 yrs; T 14 yrs S7 D4 Bomb 5-8-05 W not working on M 1-22-07; EA 2-22 DB 4-10 S 6-11 No more C Link