Navigate to the person’s profile page and tap on the Fluttr Heart icon. In some cases, this is all you need to do. In other cases, the person may have requested that potential matches answer three questions. 
If the latter, the person’s first question will display on the screen. Type your answer in the specified space below. Repeat this step for all three questions. You can review and edit each answer before tapping ‘Next question’. When you’re finished, you’ll be shown all three of your answers on the screen and will have a final opportunity to make any tweaks. If you’re good to go, tap ‘Confirm’, and that’s it. Good luck!