It depends upon which game you're using. In Harvest Moon DS Cute you have to cross the bridge and head south, then head to your right after you pass into a different area. You'll find a church-like building. Inside are Nina and Galen. ;]
south of vestas farm
Their house is south of Vesta's farm.
In the southeast corner of the valley is Galen and Nina's little house.
Galen Merriam House was created in 1847.
Visit Galen and Ninas house between 12 and 2pm on a Saturday. Make sure you don't gave anything in the coloured part (tools items and accessories) of your rucksack though or the event won't happen.
Yes
In the southeast corner of the valley is Galen and Nina's little house.
nina room
on line i love nina
yes
Galen B. Finch has written: 'The house next door'
Go near Vesta's farm and there is a walkway! Follow it and there will be a little hut and that's where Galen and Nina live!!
the medallion of friendship is 2 rooms across from where you found the dream master