i get married like this-
1. invite the person you want to marry over to your house (from free street)
2. do stuff to make your relasionship go up
3. serve a meal
4. eat with the person
5. let them go to the bathroom
6. get your relasionship up again
7. do something fun with them - go in the pool, watch T.V. with them (turn on T.V. and call them over, then watch T.V.), and stuff that gets fun up that 2 people can do
8. get your relasionship up again
9. propose
10. live happily ever after
i hope this helps, because this is what i do