I’m an author (who also writes songs), and I can tell you what I tell other authors facing the same issues. To get over writer’s block, I tell them to write “fan fiction.” Fan fiction is when you write a story with other peoples’ characters. You write a story about Kirk and Spock from STAR TREK, for example. Since it’s not your work, it feels fun, less important, and the stress that’s commonly associated with blocks fades away. It’s just a fun exercise to get the writing wheels turning. Invariable, after writing some fan fiction, ideas pop into one’s head for one’s own fiction, and the “block” either recedes or goes away. For your music, I’d suggest something similar: pick your favorite artist or band — one that sings mostly about things other than getting dumped — and try to write a song in their style. You’ll have to analyze their typical chord progressions, rhythms, vocal styles and lyrical themes. Like Pink Floyd? Try to write one like them. Rhianna? Metallica? Bruno Mars? Whatever you like, try to write a song to emulate their style. Again, all you’re doing is taking the pressure off yourself and making songwriting pure fun again. Give that a shot. I’ll wager that fifteen to thirty minutes into the process, music and lyrical ideas of your own will pop up, and your “block” will vanish.