The speaker longs to spend a quiet moment with someone they love: watching the sunrise together, side by side. The opening line, "I'm actually gay as hell," reads like a casual, playful declaration, and it sets up the lines that follow as a love poem with an openly queer voice. Judging by the text, the person addressed is the object of the speaker's affection.
The feeling moves from hope to hesitation. At first the speaker wishes to be together "for a long time," but then admits that this wish is "selfish" and "not fine." The poem doesn't explain why, so we're left to guess: maybe the other person isn't free, or maybe the speaker senses the love can't last. In the end the speaker lowers the ask to something smaller: "just for a little bit," to be "mine." The mood is tender and wistful, with a quiet ache underneath. It's the sound of someone who wants more but is trying to settle for a little.