Almost every line of "Trust Me" is the speaker begging someone to believe them. The person being addressed seems to be in real pain, and the colors of "black and blue" and "red and black" suggest bruises, wounds, or some kind of damage that has already been done. The speaker doesn't dodge this. They say twice that they know how hard and painful things are right now, then promise that the hurt will "go away" and even "drown away," as if it was never there.
What stands out is the speaker's urgency. "I'm out of options" and "I need it now" make the plea sound less like calm comfort and more like a last resort. The repeated "trust me" starts to feel almost like pressure. The mood is tense and tender at once: it is hopeful about a future of smiling, singing and dancing, but shadowed by fear that the listener won't believe it. The poem never says whether they do.