It started when their eyes met across court with so many people surrounding them,. However the acknowledgement of this love and the consummation of this impossible love took some time. After a lot of initial resistance from Guinevere, Lancelot managed to make his place in her heart. His charms started working on her and she reluctantly gave into the attraction. Soon they were meeting secretly to consummate their love.
When he started off on his travels, he asked her to name him as her knight and champion and this made it easier for them to get together. But such affairs can rarely be kept hidden. Rumors started to abound in the court. It was an affair that was made for speculation. There were many who envied Lancelot his position of favor with the king and this was their chance to cause a rift.