Sometimes when you want to give a gift to someone and it falls to the ground, appears a sad face, and you lose one heart of many people, or also if you drop weeds in the street, to recover them, just plant a tree in public land, you can press 1 to check the available public land that is colored green, it won't work if you plant in your own land. Hope this helped
1. Befriend someone opposite gender with giving her most favourite item. Make sure she has 8-10 hearts. It would be easy to talk to them but who take rather a long time so sometimes give them there favourite gifts
2. Make enough money for a level 3 house upgrade, which at first you got to get the 2 Level and altogether get around 20,000 so you can buy the double bed, level 3 house upgrade and if you want buy the lumber instead of chopping down trees for it(easier if did that instead of buying).
3. Then once you have all of those in the next day or two the Mayor (Theodore) will knock at your door at 6am and tell you he wants you to get married and there is a Bluebird feather on top of a mountain.
4. You and Theodore go to the foot of the mountain and you have to climb it make sure you are prepared for this by bringing a hammer and food.
5. You have to dodge the rocks when you are climbing up the mountain then you press the A button. And move out of the way when you see boulders comming down.
6. Once you get to the top you get the blue bird feather and you end up back down at the mountain where Theodore tells you to go run and propose to your loved one.
7. To do so run up to you loved one with ther feather in your hand give it to him/her then the next day you will get married.
8. Six people will attend your marriage (In my game I married Katie) then when you get home speak to your spouse and they will ask you what a preferred name is to call you.
9. About 20 days after getting married your spouse or you will panic and get rushed to the clinic then you will find out you/your spouse is pregnant.
10. About 60 days or so later the baby will be born!