Honey, I did the same this last flight back from San Diego - I had taken two window seats one behind the other (2A and 3A), only to have the thing happen. Men!

How I dealt with this was to stay with what I had. I am ashamed (well a bit) that I told him a Fib. I said that BA had changed the aircraft and re-assigned us the seats we had occupied. I would go down that path and blame BA. Why not? Everyone blames for anything and everything so what harm will it do. You will not have to listen to snoring and since he watched "Conclave" at my instigation, I was perfectly happy watching something that I wanted to see. You really cannot see much from those middle seats which is what they are intended to do. it is not like the ying-yang where you were face to face with someone. That was fine when you knew and loved them, sometimes one met delightful people and sometimes not. I had one individual chewing gum in my face and I was never so glad to get the screen up and end that sight.