Apparently there is an art to eating without smudging lipstick – I hardly ever wear lipstick but it never stays on either!
Have you seen the lipstick challenge video? Hilarious https://youtu.be/PSlXo55mNCw
Seriously though, you can get lipstick stay products which you paint on after applying the lipstick and they are meant to keep it in place longer (sort of like applying a clear nail polish on top of a colour). Usually to be found near the lipstick shelves in supermarkets / stores.