Landon, I really do love her.
He tried not to look at Tony as he knew the other man would flinch. Right now he had to concentrate on getting that freak away from Abby. So he lied, because it was the only option he saw right now. He knew that he would deal with Tony's fall out later but right now he had to focus on rescuing Abby. He loved the man, he really did, but he would love him just as much without his insecurities, and unfortunately, the history he had Abby had together was one of his biggest insecurities.
He remember that about a month in to them dating Tony had started acting weird. He hard tried to ignore it but after a few days he got sick of it and confronted Tony, who of course didn't tell him. After some poking, prodding and a very hot make-out session he had finally gotten Tony to spill his beans.
It turned out that he was jealous of the relation that he and Abby had once had. Only because Abby was a woman Tony was afraid that Tim would go back to her at one point or an other. It had taken Tim a lot of effort to let him believe otherwise.
He closed his eyes and groaned as he thought about the conversation he was about to have with Tony.
He was happy once Landon finally gave up his weapon and he rushed to check on Abby. When he was sure she was fine and he had re-assured that that McGregor really wasn't in love with Amy he walked outside to find Tony. The man was standing by the car, fiddling with the keys, he looked relaxed enough to anyone but the muscles in his back were tense, that was enough for Tim to know what was really going on inside the man's head. Tim strode over to him and dragged him off to a little corner, away from everyone. He pushed Tony against the wall and kissed him, hard and without a doubt claiming the other man.
"We talk about this later." he growled as he heard Gibbs calling out to him. He didn't look back, but if he had he would have seen a very happy Tony, grinning while he touching his lips, all pink, wet and shiny from the kiss.