Sorry about that! Computer fairies.
Things to keep red flags down:
On page 7 of the US passport is a place for your US address, foreign address, and a person to notify in case of emergency. I filled this out with my sister's name, address, and phone number. When I'm asked where I will be staying, my story checks out. I hide my bingo club card with my sister's address on it!
I carry my work ID, photos of my sister's grandkids, and a datebook with future plans in the US. The datebook also tells where I'll be going in the UK and when I'm coming back. I even have a picture of my cat, so they will know I'm going back home!
And I dress nicely, no jeans and pony tails.
Two things in my favor, I think. I'm an old bat so BF might never enter their minds, although one of the cuties in the pub calls me his wee sexy beastie (translation, please!). And I'm visiting family with the piccies to prove it. I have pics of the kiddies and me in front of castles, Glasgow Science Center, etc.
With 4 stamps in one year, I've still had nothing but the briefest of chats with Immigration. May my luck hold until this summer! Chris