Big Sean serenades Ariana Grande via video chat when they're apart.
The couple have been dating for a total of four months, and find their long-distance relationship difficult.
Because of this, the rapper "checks in" with his girlfriend regularly and loves sending clips to her of himself singing.
Speaking to HollywoodLife.com, a source explained: "When he's away, he checks in with her all the time, which really helps.
"A few days ago, he made a little video of him singing to her in an elevator. She loves that kind of thing. She just wants to know that even when they aren't together he's thinking of her."
However the insider added that: "Ariana and Sean both get jealous sometimes."
It was recently claimed that during a short vacation, Sean "cut off all communication with the outside world", even turning off his phone in a bid to prove he loved Ariana.
A source said: "When they were up in Tahoe, he basically cut off all communication with the outside world and gave her his complete and undivided attention.
"He turned off his cell phone for the majority of the day."
Sean enjoys taking his partner on romantic trips because he thinks it helps bring them "closer" together.
The same source added: "He loves this girl big time and all he wants to continue doing is spending time with her and being lovebirds and incredibly romantic.
"He's got more trips like that in store because he knows she loves that kind of stuff and it brings them both much closer to one another."
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