Kindly ask the crew if your friend in Y can sneak into your F suite for one or two drinks

I know quite a few regular F flyers here frown upon that situation

however our last A380 flight my girlfriend who was flying in 5A, I was stuck one row behind in Y, seat 50C. I was allowed to duck in for a couple of drinks and a few nibblies, and was advised that I had to leave prior to the formal meal service. I was totally fine with that as any free offerings is above and beyond what I was expecting anyway. A couple of things though; seat 5A and 50C would have been a few metres apart so it was convenient, 5A being the last seat in F so nobody saw me sneak in

probably played into my favour, also that we are both WPs so that may have also swayed their decision. [And I got a F ammentiy pack too which I really like, probably the best bag out of the dozen or so packs that I have in the cupboard with its tri-fold easy to see layout].