Headcannon: Horror Licks the other bad sanses when they are frustrated because animal instincts. When Cross joins he doesn't know of this at all and just finds himself being slurped by Horror and just looks at him and goes "a.... are we dating now???"
Horror fucking loves his huge burger and munches happily, Cross decides to try something and... rubs their chin and gets purring! Cross decides Horror is now his huge Doggy <3
how does Horror reply? more licking and just a hum because they are content and happy. Cross is just feeling so nervous... eventually he finds out about Horrors licking thing is due to animal instincts, which he finds kinda sweet. What does Cross do as thanks? BIG ASS BURGER
Nightmare riding dreams cock, enjoying the moment so much that he accidentally shape shifts back to passive making Dream feel all sorts of emotions but mostly horny as he cums instantly