The Milestone Trudge
 

I don't know why I've never made a thread on this before but I kind of want to know now: What milestones have you hit in your relationship with your significant other? They can be minor or major.

This was basically prompted the fact that I just gave my girl the only other key to my house tonight (something which I've NEVER done in my life) and thought about the implications of the whole action.

What have YOU done in your relationship to make you think, "Yeah... This is pretty serious and I'm OK with it."?