Sam came home to see Cas pulling away from Dean.
"What was that?" Sam asked Dean and Castiel "um I was helping him with his tests" Dean said truthfully unouth " yeah , so you're his true love now? huh" Sam pesters " Sam do we really need to get into this now" Dean asked with his best don't-want-to-talk-about-this-now big brother voice.
" Sam, can I have you're blood now?" Cas asked " since you are Lucifer's one true vessel " " Okay since I did say before " Sam said holding out his arm he closed his eyes, expecting to feel the familiar feel of a silver knife slicing through his soft skin ,but all Cas had to do was touch his arm and when Sam opened his eyes he saw Cas had produced a vile of Sam's blood and was placing it in one of the pockets of his tan colored jacket.
" thank you , Sam and Dean," Castiel said " would you like to come to Heaven to watch the ceremony of me becoming king?, and any way Dean would have to come and since you're his brother you should go as well." Castiel asked " um ok" Sam and Dean said, so soon to be king Castiel touched Sam and Dean on the forehead and they where zapped into Heaven.