I love her and see no end in sight and have no bad feelings about our relationship but for a while she has talked about planning our wedding and getting married and it freaks me the fuck out. I just get distant for the rest of the conversation until the subject passes. 

We've talked about getting married and sometimes I even like the idea, when I see other married couples around. But the vast majority of the time it freaks me out.

What is this feeling and why do I feel it even if I don't want to break up?
user
I've never felt this way about a girl and I don't
assistant
I love her and see no end in sight and have no bad feelings about our relationship but for a while she has talked about planning our wedding and getting married and it freaks me the fuck out. I just get distant for the rest of the conversation until the subject passes. 

We've talked about getting married and sometimes I even like the idea, when I see other married couples around. But the vast majority of the time it freaks me out.

What is this feeling and why do I feel it even if I don't want to break up?
user
GF of 2 years and I, love each other and want
assistant