It looks like things are really getting serious between Kanye West and Kim Kardashian. She’s got him on a short leash now. Find out how after the jump.

According to US Weekly, Kanye brought a cell phone so that he can keep in better contact with Kim. For years, the rapper refused to buy a phone and could only be contacted via email.

A source told Us Weekly that the fact that Ye didn’t have a phone “frustrated” Kim — and before he decided to get a phone, she had to contact him “through his bodyguard”. The magazine also reported that Kim is the only person with his cell phone number.

What’s the one thing you did to change for your lover?