ΔE 22.6, loose: different enough that you should pick on purpose. Phoenix Orange is noticeably darker, much more muted, warmer than Love Affair.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Phoenix Orange is noticeably darker, much more muted, warmer than Love Affair.
The same difference applies the other way round: Love Affair is noticeably lighter, much more saturated, cooler.
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 Love Affair on the colour wheel See Phoenix Orange on the colour wheel
All matches: Love Affair equivalents · Phoenix Orange equivalents