Strictly dancer Dianne Buswell and her boyfriend Joe Sugg had the most romantic time during their trip to Australia on Wednesday, and many of the couple's fans saw it as a sign that the pair should tie the knot!Taking to Instagram, YouTube star Joe uploaded some behind-the-scenes glimpses of the couple's boat trip where they spotted a dolphin swimming and frolicking with her calf.SEE: Dianne Buswell shares baby 'obsession' in adorable new postIn photos from the lovely event, Dianne cuddled up to her partner and looked at him adoringly. Joe wrote: "Today was pretty special! [dolphin emoji] Full vlog of the day will be up on my vlog channel soon!"WATCH: Dianne Buswell melts hearts with adorable family videoWhile many of his followers shared their love for the shots, several on the social media site suggested that the holiday might be the perfect time to propose.MORE: Strictly's Dianne Buswell and Joe Sugg drive fans wild with gorgeous baby photosSEE: Inside the Strictly Come Dancing stars' homes: Kai Widdrington, Nadiya Bychkova and more"Pls get engaged, you two are perfect," wrote one, while another commented: "Are they not engaged yet???" "Am 50/50 he will propose at the end of the holiday," a third wrote.