All's Fair in Love and Nuclear War

All's Fair in Love and Nuclear War is an overseer quest and part of The Book of Wuv multi-stage questline in Fallout Shelter.

Walkthrough
Upon reaching the vault site, pass through to the second room, which may trigger a fight with mole rats. There are two lootable containers in the room. In one of the next rooms are three dwellers who advise that there aren't many singles here and the dwellers below don't seem to really be dwellers at all.

Responding with "Maybe those disruptive Dwellers should be asked to leave," will result in them giving the party a Nuka-Cola Quantum. There is rare junk and some caps in the same room as the dwellers.

On the next level, any of the rooms may contain radroaches, sometimes a glowing radroach may accompany them.

Near the bottom of the vault are the suitors; answering them with anything other than "Pfft, there are many more singles over at Vault 332. Like, tons," will result in having to fight them. If the Vault 332 option is selected, a rare junk is rewarded. The end of this conversation or the optional fight will complete the 'Dissuade rival suitors' objective.

In one of the rooms ahead or below, speak to the dweller to complete 'Meet that special someone' and the quest itself. The dweller is always a female wearing a polka dot sundress, who can join the vault depending on the option chosen. The room she is in contains a Nuka-Cola Quantum. Either return to the vault or continue through the rooms to the bottom level to search for more items.

Behind the scenes
The quest's name is a play on the common phrase "all's fair in love and war."