how do you marry someone in the sims 2 Make sure that our Sim and the other Sims are Lovers {over 90 is best}, In the morning make food with a Romantic effect and either watch to see if the Other Sim eats it or offer them the food.. Now go and sit on the couch with the tv on and then wait until after they use the toliet. Now invite them to watch tv with you.. After a bit of time get up and use to direct mode to Socialize and make out with them and then try proposing. As l,ong as the option to Propose to a Sim appears your Sim can get married to that Sim.