My best friend of over 20 years is getting married in the summer and I don't feel like I can go and haven't felt like I can go since the invitations were given out. I suffer with really bad depression and anxiety, and I know I'll feel guilty if I don't go, but that's the only thing making think about going. My health is stopping me. I struggle to be upbeat and struggle with my emotions at the best of times and don't want to ruin their day of I go and I can't behave correctly. I really don't know what to do and would love some advice. I live in the UK, but it wouldn't let me pick where I lived so I put a random place on USA that it let me pick.
I think my main worry is what other people will think if I don't go, but other people is my worry and why I don't want to go. So I'm stuck. My friend says he will underatand (coz I have mentioned it before) but I feel he's just being polite.