I'm curious as to how it would effect me, but I'm not entirely sure it would be a good thing for me. As for the gf, I'm not sure how she would react to that.
I didn't feel like I belonged in their family. It's still our family, but growing up I always felt like I was different in some way compared to the rest of my family.
I'm not sure why they didn't tell me earlier, and I looked so much like my family, that when I told my girlfriend she was shocked, because of how much I look like everyone. Luck I guess there? I'm just glad to finally know honestly.
It doesn't change me, and it doesn't change who my family is, and like you said my person history got a lot bigger, and I'm currently more curious about where I came from more than anything else.
I still have a lot on my mind, but overall I'm fine with it. I know my biological mothers name, so if I want to I could try to meet her. It really doesn't change anything, it just gave me a lot to think about.
It's fine, I finally just told my parents how I felt my entire life after not talking to them about anything really. That's when they finally decided to tell me. It's not a bad thing at all. I've just had it on my mind, because it's a big deal to me.