The Avengers | Bruce/Thor, implied Thor/Loki | NC-17 | A03 link.
In which Bruce has denied himself of human contact for so long that even after all this time, he can't get enough of Thor. Meanwhile, Thor is falling in love, which presents a unique predicament for an immortal. Just a quick little fluffy/angsty smut piece, since these two don't get nearly enough love.
( Every once in a while, the need would well up inside of Bruce to the point of unbearable pressure. )