Now that Rick Santorum has dropped out of the presidential race, the big question is whether the runner-up with endorse presumed nominee Mitt Romney. A top aide told reporters that Santorum and Romney agreed to meet in the near future, and Romney sent out a press release praising his opponent as “an important voice in our party and in the nation.”

But as Romney pivots to the general election with Santorum’s help, it’s important to remember that the former rival leveled some serious charges against the presumed nominee that should not be forgotten. Here are Santorum’s top 10 hits on Romney:

1. LIAR: “If [Romney's health care] policy is bad, the policy is bad. And a bad policy is one thing. But lying to the American people is something else.” [National Journal]

2. “ULTIMATE FLIP-FLOPPER”: “He glosses over and doesn’t even tell the truth. … Here is a guy who is the ultimate flip-flopper running for president, and he’s attacking me for not being principled? That doesn’t wash.” [Examiner]

3. ETCH A SKETCH CANDIDATE: “One of Governor Romney’s aides today on television said that Governor Romney, after he wins the primaries, will be like an [Etch A Sketch] — you take whatever he said and you can shake it up and it will be gone, and he’s going to draw a whole new picture for the general election.” [Washington Post]