Select people from your contact list you are interested in. Could be the ones you want to take out on a date or have a crush on. Could be simply the ones you want to have a fling with. It's all discreet till now.
If they also add you as an interest, or have already added you, IT'S A MATCH!!
You guys can take it from there; go out on a date, have fun, do whatever you want. Enjoy!