If you are a boy, you just give your partner things like berries or floweres or really anything.never give her anything bad like weeds or rox. talk alot to her. after awhile, she will start to say different things. eventually, she will ask you to meet her on the cliff. go and meet her. i would save before you go. this should be a year or 2 after you started givinh her stuff. when you go to the cliff, you can say, yes or no to her proposal. if you say yes, then you will go back to the farm and have kids and stuff...up to 2 kids.
If you are the , the same thing will happen, 'cept the game ends when you get married.