How do you edit reltionships on sims 3 after you have made your sims and come out of create a sim?

Yes you can!! you can either get married, get divorced, break up, or just be friends. but if you break up with them, they wont be your friend, and you cant get back together. if you are just a Romantic interest, then you could click Just Be Friends. if they say yes... then your in luck! But if they say no, then you have 2 work on being friends with them.