Ch4y4x's "Happiness" is a short plea from someone who wants joy and is willing to settle for very little of it. The speaker asks for "forever for a while," a neat contradiction that captures the wish for a lasting feeling, even if it only lasts a moment. If that's too much, a smile will do, as long as the bitterness goes away.
The second stanza shifts to discovery. The speaker "found you at midnight" with a telescope, which suggests the person or thing they found is distant, like a star, and hard to reach. Even so, it fills the speaker with hope and a sense of being enlightened by that light.
The final two lines step back and say that explanations and expectations disappear, replaced by transformation and sensation. In other words, the speaker stops analysing and simply feels. The mood is wistful but hopeful, moving from need toward a quiet kind of wonder.