Sadly we all feel the lack of formal research and papers on aromanticism. I just checked my regular source but sadly it is all about asexuals, which is having it's own problems with finding correct participants for studies. Exploring the forums here and other informal internet resources really seem like the only option right now.
As for the other things I second what everyone else has said. You being okay with being in a relationship with an aromantic does not automatically mean the aromantic is okay with being in a relationship with a romantic. Guessing from my own knowledge, marriage maybe the one step too far - I know plenty of romantics who are repulsed by marriage or don't believe in the concept.