x1=m1=c3 is romantic to x2=m2; x1 is beautiful to x2 because it follows or is based on some emotional ideal that may not actually reflect reality.
Not "romantic" in the sense of "pertaining to intimate love" (=cinpamra'a); rather, "romantic" in the sense of viewing emotions as a higher and more important quality with extraordinary properties. See also cinmo, melbi.