<human>: Hey there /r/relationships!

My girl is going to get her septum (middle of her nose) pierced with her friend (24 M) this weekend, for no apparent reason. I should say that I trust this guy, and don't believe this is a date--they are real good work friends.

She broke the news to me last night over text message, and I immediately responded with "omg you are changing your face," which she interpreted as a joke and dropped the subject.

I am a naturally insecure/jealous type, and in the past I have messed relationships up by trying to control my partner (aka Don't go out to coffee with your ex. or Don't go to his dorm room with him alone.) 

I really don't want this girl to change, at all. I had an experience in college where my girlfriend cut off all of her hair, and surprised me the next day. It was awkward.. kissing was different and I never fully felt the same about her (the personality changed, as if the hair cut [which was down to her hips] set her free).

I am fearful this is happening again, but I don't want to be controlling and tell her what she can and can't do.

Can you give me a shortened version of the text?
<bot>: my gf is getting her nose pierced like a bull this wknd and i don't want her to change. what can i do, or should i just let her be?