Yes! If you notice someone while sliding through dua.com's profiles and you don't want to wait to see if they like you back, you can message them directly through InstaChat.
As a Freemium user, your InstaChats are limited. You can always purchase additional items through in-app packages or subscribe to Premium to get more.
When sending an InstaChat, be creative. Being creative can make your conversations more interesting and enjoyable.