- 7/15/08: With the repeal of Bill 1913, which prohibited out of state residents from marrying in Massachusetts, both same-sex couples that reside in Massachusetts and out-of-state couples can legally marry in the State of Massachusetts.
- 6/14/07: The Massachusetts legislature upheld the Supreme Court ruling amid a voter initiative to overturn gay marriage in the state. Same-sex marriage will remain legal in the state until at least 2012.
- 5/17/04: Massachusetts became the first U.S. state to legalize same-sex marriage.
- 11/18/03: In the case Goodridge v. Department of Public Health, the Massachusetts Supreme Judicial Court found that the state may not "deny the protections, benefits and obligations conferred by civil marriage to two individuals of the same sex who wish to marry," effectively legalizing same-sex marriage in the state.

