This is my first attempt at a songfic. Based on Best of You by the Foo Fighters. Enjoy your Janto fix for the day :)
Jack couldn't quite put his finger on it. There was something about Ianto Jones that made him think that he wasn't quite all there. When he was working during the day, covered up in his suit, the usual mask on his face, none of the true Ianto could be seen. This worried Jack of course, the fact that Ianto hid himself from his colleagues, people who cared for him deeply, despite what he might have thought. Ianto Jones didn't have friends. Friendship required a mutual affection, but if he just asked he would find that more people would answer him than he might have originally thought.
Although Jack was concerned about this side of Ianto, it wasn't what caused him to stay awake at night fretting about the young man. No, what worried Jack the most was the fact that even when they were love making, naked, sincere and vulnerable, there still seemed to be a bit of Ianto missing. It wasn't that his attention was on something else, Jack didn't think Ianto even realised it. It was like there was something dragging him to a different place, out of the safety of Jack's arms to be somewhere else. This was what kept Jack Harkness awake at night, staring down at the vulnerable man who lay across his chest. Ianto had been hurt so many times, maybe he just hadn't been fixed in time.
Jack wasn't with Ianto that night, Ianto had made some excuse before rushing out of the hub before the others had even collected their belongings. This was so unlike Ianto that even Owen realised that something was amiss. Jack didn't sleep a wink that night, he was too busy thinking about what could possibly be going on. From Ianto's behaviour he assumed that he'd find out soon enough, and he did.
The moment Jack saw Ianto the next day, he could instantly tell that something was different. It was the way he held himself, like he was trying to hold himself together just a little bit more than usual. Jack thought he had seen that look before, but not on Ianto. It was when one of his ex-boyfriends had slept with Jack for the first time. The next day he had had that look about him. He later told Jack that he had had a fight with his boyfriend and that was why he had slept with Jack. The day he had looked like that was the make it or break it day for their relationship. This couldn't be right for Ianto though, they hadn't had a fight. Ianto couldn't have been seeing anyone else, could he? Then Jack talked himself out of it, Ianto couldn't have been seeing anyone else because his girlfriend Lisa had died at Canary Wharf. So why did Jack feel like Ianto was giving the best of himself to somebody else? The thought haunted Jack for the entire day.
Then it happened, that was when they found Lisa. The thought that Ianto had lied to him cut Jack right to his core. Every touch, every slightly reluctant kiss Ianto had given him had been a lie. It wasn't anything to do with the fact that he had never been with a man before, it was because he was still in love with Lisa. The same Lisa who he had hidden in Jack's basement and kept alive since Canary Wharf. For the first time in his long and complicated history, Jack carried out his actions with jealousy resting in his heart.