it takes two to make a bargain
Two parties must agree in order for a deal to be reached. Then go in there and convince them to accept this deal! It takes two to make a bargain after all. We're all ready for the merger, but it takes two to make a bargain, and the other company has been dragging its heels on the paperwork.
It takes two to make a bargain.
Prov. Both parties in a negotiation must agree in order for the negotiation to be successful. Jill: You'll give me a ride to work every day this week, like we agreed, won't you? Jane: Wait a minute. I only said I'd give you a ride to work today. It takes two to make a bargain. Ellen: We decided you should make dinner tonight, right? Fred: No, we didn't decide that; you decided that. It takes two to make a bargain.