Sir/
Madam, I would be VERY carefull....
I've had an instance or two of this nature, & in either case, it did not end well @ all..
What happens is, in most circumstances, you slowly grow apart. your minor differences begin to grate against the relationship.
In the beginning, your differences brought you closer. It was something new, something fresh, something exciting.
But after awhile, you ask yourself, "how did I get into this?" In my case, the girl was in her own world it seemed...two people w/ different goals/plans in life. I was NTFS, & she was FAT(heh ;) Certainly nothing you'd want long term...
You care for her, but not in a way where you wish to remain with her forever. It is sad, yes...many times my heart yearns for hers....& if you're in a relationship like this, when you split...yours will too...& it will most likely never stop. But such is life...
This may or may not be of any help, 'tis only my ramblings based on my own personal experience