It goes without saying that celebrity couples are always sending each other sweet messages on social media – whether they are posting photos together on Instagram, snapping adorably filtered selfies on Snapchat or flirting with each other on Twitter. From Dove Cameron and Thomas Doherty to Bella Thorne and Gregg Sulkin, these celebrity couples of the past and present have exchanged some flirty words with each other before they started dating. We've dug deep to uncover proof that these celebs pairs were crushing on each other via social media before it got serious.
Click through the gallery to discover which stars have been caught flirting with each other on social media before their relationship went to the next level. Then, drop a comment below telling us which one surprised you the most.