The couple sparked speculation after the wrestler's leading lady was spotted with a ring on that finger. Eagle-eyed fans saw the rock in question during the duo's recent outing in San Diego, Calif. "John Cena [was] spotted at a carnival in Mission Beach, San Diego with Shay Shariatzadeh right behind him with [a] huge engagement ring on her finger." one source told. A social media user also posted a picture of Cena at Belmont Park that only fueled the rumours. Some followers also wondered if the WWE star's recent Instagram posts were cryptic clues. Just a few days ago, Cena shared a picture of a man holding a giant heart that read, "Say yes." In addition, Cena posted another picture of what appeared to be a bride and a groom dancing in a park. Neither Cena nor Shariatzadeh have commented on the speculation. If the engagement rumours are true, then Cena and Shariatzadeh wouldn't be the only celebrity couple to recently take this major step.