Shinji And Warhammer 40 K of course has Shinji/everyone teases, though Rei gets the largest chunk of moments in her favour. Asuka/Kaworu got a lot of teasing too (including kissing) before Kaworu revealed himself as an evil bastard.
Fate Stay Night Ultimate Master has some ship tease between Ben and his Servant Avenger, very much in the same way as Shirou and Saber have in the original source material. Examples include both acting like a Battle Couple, Ben being clearly stunned by how beautiful she looks and Avenger insisting on sleeping in the same bed as him for better security measures.
In the fanfic based off Help Me! Dr. Hazama! called Disaster Piece Theatre, there is quite a lot with Ragna and Noel. It is also heavily implied that there would be a fanfic that would delve more into it.
In Forward, there are a number of scenes that tease River/Jayne. The author does, however, twist these around quite a bit, and one of the most tense moments between the two is ruined by a realization that psychic mind-manipulation was involved.
Imperfect Metamorphosis has no explicit pairings whatsoever, but loves to drop hints regarding popular fandom pairings such as Marisa/Alice, Yukari/Yuyuko, Kaguya/Mokou, and Yuuka/Wriggle. There is also something developing between Rumia and Rin Satsuki, though what exactly is difficult to determine given the general Mind Screw nature of their relationship.