[JessKilljoy]

I'd say if you were still together five years down the line, your clearly both in love with each other and I don't think him wanting to marry a catholic would be too much of an issue if he by then has been with you so long. You both might have to compromise slightly but if your both supportive of what you both believe in and your respecting of it I'm sure it will figure out. I woudn't worry too much, when the time comes I'm sure it will plan out right for you both.