Nope, you can have affairs with other adult or elder sims if you want though.
Chat with our AI personalities
your sims can't get married in the sims 2 Castaway for the DS.
You can't get married.
I know that on the Sims 2 pets on PSP, if two sims have a very high relationship, they can get married, I'm not sure about the sims 2 even though I have it. Awfully sorry. From Dr. Sims x
Yes they can. My 2 lesbian Sims got married, and then divorced and then both married guys. They made out as well.
You don't do that in sims 2 only in the new game - sims medieval.