It would have been Jayley Woo and Aloysius Pang's 51st month together as a couple on Thursday (April 4).
The late actor tragically died in a New Zealand hospital after he sustained severe injuries during reservist training in January.
Actress Hayley, the twin sister of Jayley, wished the couple a "happy monthsary" by dedicating a video to them nevertheless.
"Happy 51st monthsary to you two! Aloy, for what you couldn't accomplish, I'll help you," wrote the 27-year-old, who described the video as "one of the happiest days of our lives".
[embed]https://www.youtube.com/watch?v=KcStn5mglA0[/embed]
Her Instagram post also mentions that Aloysius had promised to finish editing the video for her to upload on her YouTube channel before he left for New Zealand.
"It’s finally completed! All these memories will forever be kept close to my heart this lifetime," Hayley added.
ALSO READ: Jayley Woo pens heartbreaking note to late boyfriend Aloysius Pang
These "memories" are previously-unseen footage of Aloysius bringing the twins to Sentosa for their birthday on December 27.
From riding cable cars, to bungee-jumping and having dinner at the aquarium, the trio were seen having a great time.
At one point, the duo say to Aloysius through the camera he is holding to film them, "We want to say thank you to the person behind the camera for planning all this."
Aside from Aloysius, Jayley also showed her appreciation towards her sister, but this time through her Instagram Stories: "What a sweet sweet surprise. Thank you, sister.
"It’s my honour to be your twin this lifetime.”
lynette@asiaone.com