SPOILERS AHEAD, OBVIOUSLY.
Let's get the obvious out of the way first. To steal a line from the issue, this book is *chef kiss* perfection. It's funny, fast-paced, and just generally delightful.
There is not even the slightest hint of a love triangle, unless you count the threesome that seems to be permanently happening in Deadpool's mind. Gambit is mildly jealous, but in the "it's not my business; I'm married to you now" way. He does call her "my bride" a lot, which seems deliberate. Rogue gives him no reason to experience greater jealousy.
Gambit and Rogue both have moments to shine. You see their respective skills, and see how they compliment each other. They really do make a great team on the field.
My only critique is a minor one. Deadpool is a BIG character. Like, he exists to steal the scene and get the best line, and he ends up doing that some of the time. I enjoyed his presence, I laughed a lot, he works well to bring in some fun tension, but it felt very Deadpool-centric at times.
So, to the recap...
The book opens on the former honeymoon ship where Gambit and Cerise have been taken captive by the Shi'ar Imperial Guard. Gambit springs her cuffs, but tells Cerise to wait until he is free before making a move. Unfortunately, at that point, the guard shoot down the ship with Rogue, Deadpool, and the egg. Cerise breaks out a teleporter that she attunes to the Shi'ar's bio-signatures and uses to take them far away. (Presumably, it works on all species in the empire, rather than just the feathery kind.)
Rogue and Deadpool are, of course, fine. Rogue's invulnerability sees her through the crash without a scratch, while the spacesuit is fancy enough to avoid strategic shredding. (I believe it's the underrated female writer component.) Deadpool is already regrowing his vital organs. It turns out that Wade wants the egg, and tries to convince Rogue that he laid it or pooped it. Rogue is unconvinced and asks him if he would walk away as his wedding gift, but he points out that he was not invited and that obviously affects the value of the gift.
While Rogue and Gambit are distracted with their reunion, Deadpool runs away with the egg, but is rapidly blown up by Gambit, with Rogue's permission.
When Gambit discovers its an egg, he utters one of the best lines in the book: "I feel like Kitty is trolling us makin' us babysit an egg on our honeymoon. This ain't s'posed to be some high school health class project." Plus, Gambit is the sex ed teacher. He assigns the egg babysitting, thank you very much.
After Deadpool recovers, a fight commences between him, and Gambit and Rogue. But Technet crashes the party with all their awesome Warren Ellis/Alan Davis weirdness. Gambit, Rogue, and Deadpool form a team-up to fight them. Deadpool defeats Joyboy with the power of his terrible, perverted thoughts, while Rogue temporarily gets a new and awful look that will haunt Gambit's nightmare and Deadpool's fantasies. Rogue borrows Yap's powers, and teleports them out of there. Unlike RuPaul, she does not want to be called Mother by him.
Back in the honeymoon ship, Gambit, Rogue, and Deadpool are debriefing, and Deadpool is assessing their respective "bacons." Gambit has good "bacons," which is unsurprising. Rogue is negotiating with Deadpool, and moving into threatening him, when the egg cracks. It's... a Rogue? Was Kitty right and they should have paid attention to space health class? Is it a happy ending for Deadpool? Does everyone now get a Rogue?