I'm getting this game soon,can someone tell me who you can marry?

You can marry Rock, Marlin, and Gustafe.

Hope this is what you wanted.
Hotshot

You can marry rock Marlin and Gustafa, to make this easier for you when you get this game here is everything you need to know about those three guys! :

--MARLIN--

He Lives: Marlin lives at Vesta's farm with Celia and Vesta.
He Works: Vesta's Farm
Your Rival: Celia

Schedule Before Marriage: He's an early bird, getting up at six and then spends
the entire day at Vesta's farm usually. If he does amazingly leave his work
area, he'll probably be at the waterfall or the bar. He may seem rude at first,
but he's very anti-social. He has a problem interacting with other people, so
get to know him and then he'll open up. I personally think your rival for
Marlin should have been Nami, but then they're BOTH anti-social. They would
either understand each other's silences or their relationship would never work
out. Marlins kid is calm but teasing, he doesnt run away when you put him down, he waters your crops sometimes, and loves you, and his intrests are farming. you can change those interests though by showing him to people that are into what you want him to be into.

Schedule After Marriage: He wakes up at 6AM and then will go to bed at around
10 or 10:30PM, depending on the chapter. Like Rock, he just barely gets the
minimal amount of sleep his body requires. He should get more, considering
he complains about his health sometimes.

Celia, the girl who moved in with Vesta and Marlin a few years ago is a very
strong rival for Marlin. She's oblivious to the fact that Marlin is falling
in love with her, so that's something that's leaning in your favor. You'll
probably have bad luck avoiding Celia and Marlin's cut scenes, so don't worry.
Marlin isn't that hard to get, but definitely a lot harder than Rock. He IS
anti-social, remember?

Likes: Curry, Bodigizer, Bodyhyper, Grade A Milk, Turbojolt
Dislikes: He's just...very picky.

Diary: Located in Vesta's farm house, near Marlin and Vesta's beds. It's the
plant closest to the beds.

NOTE: Marlin won't accept gifts if he's standing still with his hands in his
pockets. So, if he doesn't ask you if you want to buy anything when he's on the
farm, you probably shouldn't give him a gift.

Grade A Milk, Turbogizer