Neither of these amendments automatically become law, but they will unless a new devolved government isn't formed at Stormont before 21 October.
This landmark moment could mean that same-sex marriage will be legal in all parts of the UK, having first been approved in England and Wales in 2013 and Scotland in 2014. Ireland introduced the law in 2015, following a referendum.
Although this is a significant event that will be celebrated by many, acting prime minister Theresa May has found herself being accused of hypocrisy.
Reports have confirmed that May did not take part in either vote, just days after posting a tweet during London Pride weekend stating that, despite her impending departure from Downing Street, she would remain an ally for the LGBT+ community.
In light of her recent comments about remaining as an ally for LGBT+ people, many have been quick to admonish May for not even taking part in the vote, which wouldn't have made a difference but went against her word from just three days prior.
It is also worth noting that the two men vying to replace May as prime minister, Jeremy Hunt and Boris Johnson, also didn't vote yesterday, the latter of which had also announced his support for LGBT+ equality.