How can i get back at my friend for tellen me lies??

Ok so i texed him sayin can i spend the night, he said no sorry i cant have anyone over, so i go to facebook, and find that his gf posted something sayin "going to (friend)'s house with everyone. and i knew that he lied straight threw his teeth, so i want to get back sarcasticly, i want to make them feel like i dont know, and is gettin suspicous, so that can make them feel guilty, help me out please! thanks