How do you have a baby on Harvest moon magical Melody?

Pick someone you think would make a good husband/wife. Bring them one thing they like every day. It takes 5 hearts to date them, and 8 hearts to marry them. When you have 8 hearts you have to climb a mountain, get the blue feather and propose to him/her. It takes one season to get pregnat,and 2 more for the baby to be born.