When you're so infatuated with one person that you feel almost as though you're in love with them, yet you can't quite
define it as love. Being
sprung for someone is when their name doesn't stay off your mind for more than a few minutes; when you feel like you couldn't live without them; when it seems that everything you do, you do for them. When you're sprung, you're stuck on one person; suddenly, no one seems to matter quite as much as they do; when you don't see them all day, it feels like you're missing something, like the day didn't even count as a real day.
When that person comes close to you, your heart starts
fluttering, beating faster and harder, and it feels like it might explode out of your chest. Your hands get
clammy, and your head feels like it's
in a fog, where the only thing you can see, hear, feel, is them. When they
touch you, your skin flushes from your head to your toes, and the spot they touched becomes super-sesitive, as if your body desperately wants to feel their touch as much as possible.
Sprung is when you have
no control over how you feel for someone; you feel almost obsessed with them. Yet, somehow, it's still not quite love. Eventually, it will turn into love, though, given enough time.