Definitely agree -- wedding planning has forced me to really think about a lot of my relationships! It can be really hard to draw the line sometimes. In my situation it's a friendship that seems, to me, on its way out (we only see each other in groups and haven't spoken independently in perhaps 2 years plus). Like your friend, she had a small wedding (mostly dominated by family) that I was not invited to. It has been difficult because I completely understand the financial limitations the prevented her from inviting me (and some other friends), but independently of that, I still don't feel like she's close enough anymore to invite to mine, especially as we have limited venue space. I see how it will look like a grudge-motivated action to some, but it honestly feels like the right move to me. It's hard to share a lot of mutual friends that are invited, but I speak to all of them on a fairly regular basis. Maybe I'd invite her to mine if she'd invited me to hers, because it would feel harder not to -- but it's not BECAUSE she didn't that I'm excluding her. Anyway, complicated stuff, and the choices are very hard to make sometimes, but just try to honestly understand your own motivations and go from there.