How to control my blushing?

I don't even know if this is possible. I don't blush as much as I used to but I had an incident the other day. I was studying with my friends and sister. They were talking about Graham from 'Once Upon A Time' who is apparently going to be the guy in 50 Shades of Grey. Well, when my friends were talking about that my sister exclaims, "Sabrina, you read 50 Shades of Grey didn't you?" The room was silent for a moment followed by surprised remarks. I look at my sister and say, "I think you mean 'A Picture of Dorian Gray'. I never read 50 shades!' I was in full blush mode. It wasn't a light blush that comes and goes quickly. I was really red (I call it tomato syndrome). Then the comments started about how red I was which made it worse. Ahhh it doesn't happen as often as it used to but I obviously need help controlling my redness.

Any ideas?