<human>: Can you provide a brief rundown of the text in within 3 sentences?

Me and my girlfriend have been together for seven years, I've known about her being Jewish since we met and I've respected everything that she and her family do when it comes to their beliefs. I attended her younger brother's bar mitzvah and I've been researching Judaism for a long time since we met. It's something that I've been really interested in considering that I've been raised in a non-religious family. 

For the last year, we've been talking about various stuff about what we want at the wedding and what last name will we take and one of the main things that she wants is for me to convert to Judaism. We have been talking about this for about four years now as we have grown closer and I've learned more about her. I'll say again, I've never been religious myself, but now we've reached such an important moment in our lives that it's been brought up a lot now. 

I only know a few things about how the conversion process works and I've told her that I'm a little nervous about it. Getting married is a big thing, but converting to a religion is a much bigger thing that can change your life and be very overwhelming. We have visited a rabbi and I was turned down twice, but my girlfriend wants to try again as she really wants this to happen. 

I just don't know what to do or say about this whole thing, any advice?
<bot>: Me [26M] and my girlfriend [28F] of seven years have been engaged for a year, she wants me to convert to Judaism when we get married and I don't know what to do.