As there is 25 % chance (in my personal opinion) to lose the bet I chose not to bet on that.
That's a shame. You could have made some easy money there.
Let me know if you change your mind.
I refuse from the bet and that offers you a nice exit from others who might want to take advantage of your generous offer.
Instead you might be spending 1 btc better in buying something nice as a surprise to your wife/girl friend / boy friend / anyone significant to you.