What is the overall tone of this poem?

Hap
by Thomas Hardy

If but some vengeful god would call to me
From up the sky, and laugh: “Thou suffering thing,
Know that thy sorrow is my ecstasy,
That thy love’s loss is my hate’s profiting!”
Then would I bear, and clench myself, and die,
Steeled by the sense of ire unmerited;
Half-eased, too, that a Powerfuller than I
Had willed and meted me the tears I shed.

But not so. How arrives it joy lies slain,
And why unblooms the best hope ever sown?
—Crass Casualty obstructs the sun and rain,
And dicing Time for gladness casts a moan….
These purblind Doomsters had as readily strown
Blisses about my pilgrimage as pain.

Read the passage from a raisin in the sun. ruth (looking up at her and smiling): . . lord, that man—done changed so 'round here. you know—you know what we did last night? me and walter lee? beneatha: what? ruth (smiling to herself): we went to the movies. (looking at beneatha to see if she understands.) we went to the movies. you know the last time me and walter went to the movies together? beneatha: no. ruth: me neither. that's how long it been. (smiling again.) but we went last night. the picture wasn't much good, but that didn't seem to matter. we went—and we held hands. beneatha: oh, lord! ruth: we held hands—and you know what? beneatha: what? ruth: when we come out of the show it was late and dark and all the stores and things was closed up . . and it was kind of chilly and there wasn't many people on the streets . . and we was still holding hands, me and walter. beneatha: you're killing me. how does the playwright develop the theme "it can be difficult to keep romance alive in a marriage" in this passage? the playwright has ruth use flowery, extravagant language about an uneventful evening. the playwright has ruth brag about her marriage, which upsets and angers beneatha. the playwright has ruth mention small differences that make ruth feel closer to walter. the playwright has ruth describe every detail of her evening to show how worried ruth is.