Do people flirt only when they are being insincere or fake?

Flirting does not inherently equate to being insincere or fake. Many people flirt as a way of expressing interest or affection towards another in a playful or romantic manner. It can be a natural part of human interaction, where individuals seek to form a connection or explore potential chemistry with someone else. For some, flirting is genuinely reflective of their feelings and attraction, and for others, it might be a lighthearted way of engaging socially. While there are instances where flirting may be done with less sincere intentions, such as attempting to gain a specific favor or advantage, it's important to recognize that flirting can also be an honest and fun mode of communication between consenting parties.