Curt Swan Super Romance Artist?

Remembering artist Curt Swan on his birthday, and wondering, as it is February near Valentine's Day, why wasn't Curt used on romance comics?

Oddly, he wasn't, but here are a few issues with Lois Lane and Jimmy Olsen that show he has all the basics down, with weddings, jealousy, crying, fighting, shame and kissing....

Superman's Girlfriend, Lois Lane 7 and 31

Superman's Girlfriend, Lois Lane 29 and 30

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Superman's Pal, Jimmy Olsen 56 and 76

Superman's Pal, Jimmy Olsen 21 and 98