My two cents is that Devon is dragging his baggage from his past relationship into what was going on with Gerard. And to generalize and stereotype, they are not only teenagers but also boys, so they have a few glitches in communication and wham bam thank you ma'am (or Gerard) and you have a goofed secret romance.
That was a run-on sentence but whatev.
Please update like now, or at your earliest convenience. Thank you.