How to add songs to iphone withouth syncing whole itunes?

I'm trying to add some songs from my laptop on to my boyfriends iphone but it won't let me unless i use itunes. I don't want to use itunes as it will sync my whole library to his phone and he already has one on his laptop which unfortunately is an hours drive away. Is there a way where i can plug his iphone in and drag music into folders like i do with my blackberry?

Annoyingly your iPhone can only be synced up to one computer at once. This is most probably a deal Apple did with the devil (the Music Industry). If your boyfriend wants to exclusively use your laptop, but you don't want to sync every song, you can make a playlist just for him and when you sync the iPhone, tell it in the music tab to sync not every song, just the songs within his playlist.

WARNING though, if your boyfriend syncs with your laptop, the iPhone will be restored to factory settings and everything will be lost - every piece of music he has, every image, video, application and wallpapers.

I know, it's a broken and outdated model to have only one computer. But that's what we're stuck with I'm afraid!