I think The Donald will learn his lesson the first time he reaches his hand across the aisle and the Rats bite it.
And the rats will learn their lesson when they bite Trump’s hand and find themselves in a rat trap and that Trump has taken their cheese.
Trump will learn when he suffers democrat body blows to the groin. His problem is that he trusts people and assumes they have ethics and care about America. He’ll learn...
Trump already learned this lesson, no need to worry. He's NOT going to forget, he's not a member of the Bush family, nor a member of the Stockholm syndrome GOP in any way shape or form.
To understand what Trump did with that "overture" to the democrats, you should look at The Art of the Deal.