Ianto Jones is probably the only person in the world who could get Jack's 'bedroom manners' in order.
(Post-Series 2) Jack is the glue that's held the team together through it all, and holding everyone else together is what's allowed him to bury his own hurt. But when things get better, Jack has no distraction and finally has to deal with grieving.
Jack and Ianto are out on an overnight Rift-monitoring mission, and Ianto is cold and grumpy. Jack has it sorted, though.
With Ianto and Jack settling into a life together (and back on Earth), Ianto decides it's time to reconnect with the rest of his family... who were, of course, told he was dead (will be multi-chapter).
It's rare that Ianto gets a good, long laugh, but when Jack fails to consider a turn-of-phrase, Ianto can't help his reaction.
Sometimes, Ianto really just needs some peace and quiet.
Prequel to "There's Always a Price," or: How Jack Figured Out He Couldn't Go On Without Ianto (With Help From Tiny Ted). Also features "Allons-y Alonso." With thanks to badly-knitted for the idea. Tiny Ted is really becoming quite a character :)
Ianto never, ever loses it or gives in. Except...
In his early days at T3, Ianto learns something about Jack... and about himself.
Multi-part mpreg. Fair warning: I'm not promising (nor ruling out) a happy ending... A few years after setting down, Jack falls pregnant for the first time since he was a Time Agent. But a lot has changed since then.
Post-"Sleeper." Ianto definitely had some interesting thoughts watching Jack interrogate Beth, thoughts he know just how to bring to life.
Jack isn't looking forward to the talk he needs to have with Ianto after getting back from 1941. Ianto has a different idea of how to deal with their "talk." (Post-"Captain Jack Harkness" and mention of "Adrift" spoilers).
AU (no Raxacoricofalapatorian Lord Mayors, no T3 Hub under the Plass). While the Doctor's refueling the TARDIS in Cardiff for 24 hours, Jack goes off to enjoy what the 21st century has to offer. What he finds makes Jack want to stay... but he's only there for one night.
Jack and Ianto's first proper date. Jack offered dinner and a movie, but it's practically impossible for two members of Torchwood to find a film that doesn't remind them of work.
Ianto isn't getting enough sleep and Jack isn't happy about it.
Follow-up to "Silent Support." As soon as Ianto has a moment alone with the rest of the team, he gives them a piece of his mind about their attitude toward their leader.
Ianto's the only one not angry with Jack after he lets the faeries take Jasmine (post-Small Worlds).
A puzzle wedding ring from the future washes up from the Rift and it's Ianto who puts it together... thereby creating a particular bond between him and Jack. Except that Ianto's got the only one, so the effect only goes one way. Will the other one turn up as well, or will they have to find a way undo the bond so things can get back to "normal?" (Will be a multi-chapter.)
Even when things are perfect, blue moods can still happen.
Jack and Ianto on a trip to the market. Jack is beyond hopeless and Ianto regrets pressing him into service.