That's okay.
My personal belief is that by proposing a mutual tie you are putting the other in a position to do one of 2 things:
1) lower their effort
Or 2) tell you what they plan to do.
As a receiver that planned to play with full effort you are screwed either way. The only escape where you can still play as you want without giving information away is to always accept.
Crunchy! If you eat fast enough