That must mean things are getting pretty serious for the couple now then, right?
Taking to Instagram, Scarlett debuted Luke's little inking that he has had done in honour of her. Sitting among a slew of other tats Luke has already had etched onto his arm, is Scarlett's initial 'S.'
Alongside her post, Scarlett told fans her boyfriend is "full of surprises."
Gushing about his cute gesture, she said: "Might not be conventionally romantic but we both knew we love each other when we were sat giggling at conspiracy theories watching Bottom, hence the S in Bottom font. I'd never felt so content at [that] precise moment in all my life. Love you @lukecrodden."
Scarlett first went public with her romance with Luke in April, although it's reported the pair actually started dating a few months before that. Since then, she has been keeping fans in the loop with plenty of relationship updates and smitten selfies.
The duo even ventured to Turkey for their first holiday together as a couple, and Scarlett gushed that she was "feeling lucky" to have met her man.
She said at the time: "Didn't think I'd ever find anyone who could care for me and make me laugh the way this one does #feelinglucky @lukecrodden."
Fans have since seen Scarlett appear on Celebrity First Dates, but turns out that was filmed before she met Luke. Those that tuned in learnt that Scarlett had met Luke just a week after she filmed for the Channel 4 show.
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