ΔE 25.1, loose: different enough that you should pick on purpose. Lustful Purple is noticeably darker, cooler than Gum Pink.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Lustful Purple is noticeably darker, cooler than Gum Pink.
The same difference applies the other way round: Gum Pink is noticeably lighter, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Gum Pink on the colour wheel See Lustful Purple on the colour wheel
All matches: Gum Pink equivalents · Lustful Purple equivalents