Britney and Asghari are known to be besotted with each other, documenting their relationship all over their Instagram feeds.
The pair first met when he featured in her music video for "Slumber Party."
Since then, the two have fallen deeply in love, travelling the world together, going on romantic dates and even exercising together.
During Britney's recent rehab stint, the personal trainer frequently offered words of support on his Instagram story.
According to Radar, the 25-year-old visited her every day.
Britney's bond with Asghari has deepened since then, and the “Oops…I Did It Again” singer is reportedly grateful for his support on her road to recovery.
An insider told Radar that the 25-year-old hunk is the "only one she can turn to right now."
Despite the pair flaunting their love for the world to see, they are yet to confirm any engagement rumours.