Recently, I had that experience. Expect deep feelings. Fear and joy (and to learn more about yourself) and feelings better can be very close together. That's what I feel know. I would do it again. As your partner supports you and loves you deeply, this will make it easier for you.
I guess, we haven't learned, or forgotten, to cope with such situations. It's an adventure, a challenge to share your love in that way and it is for the good of mankind and yourself.