I'm going to tell my friends gf she is obsessive over my wedding
Why do you need to tell her how obsessive she is?
I think she is wasting too much time on me and not her partner.
I can see how it can concern you, but it's a wedding and she has the right to be obsessive and excited over it. It's a once in a lifetime event and she might never see such an opportunity again. You need to be more understanding and happy for her.
I'm going to tell them anyway! they will see once I show them she is obsessive.
It can be really hurtful to call her our and make a scene. But maybe you can calmly explain that you are feeling smothered or something and ask her to back off a bit.