Well, I have a feeling I will be called for interview primarily because of our age difference. One of us is almost half the age of the other. To be honest, I am not worried of the interview because I know in my heart we have a genuine relationship, age shouldn't be an issue at all. I will speak from my heart during the interview that I love this person with all my heart etc etc.
My only worry is that in the event we are both called for interview, my partner needs enough time to ask for a leave. 2 months, 3 months in advance maybe. And of course, so expensive tickets