Do not see the issue at all. Everyone has flaws, she know's.... who knows what break throughs you will have and sounds like you hold your own as it is now anyway!
She wants to Marry you.. You wanna Marry her.. I see no issue. Kids can add stress etc, I wouldn't personally run into that one... but a different topic for another day
She wants to Marry you.. You wanna Marry her.. I see no issue. Kids can add stress etc, I wouldn't personally run into that one... but a different topic for another day