As of March 2011 both the Indiana state House and Senate had approved a bill banning gay marriage in Indiana and included language which bans the state from making domestic partnership laws. The bill explicitly states that marriage is between one man and won woman and “no legal status identical or substantially similar to that of marriage for unmarried individuals shall not be valid or recognized.”
According to Indiana state law, this bill must pass again in 2013 or 2014 to be written into the state constitution.