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?