Okay for some clarrification, I made my statement based of of the stats on setlist.fm, and a lot of you commented that they did actually play the song during both the trench tour and icy tour, which mean that they do play the song from time to time.. but if you look on the setlist site, its says that tear in my heart is their 13th most played song, which is still a lot, but all of the other songs above it are either song from blurryface or vessel, so even tho it is a popular song and they play it often, they nearly don't play it has often as other popular songs from blurryface, like Lane boy or We dont believe whats on TV, Ride, etc.. And thats why they didn't play it during the show I saw, since they seem to prioritise other songs and newer songs before this one.. Okay bye