I have some advice for Lyft and Uber: Get over each other.

Tensions, always simmering between the two, flared this week. In an unusual press blitz, Lyft co-founder John Zimmer and a Lyft spokesman blamed Uber for fueling rumors it was desperately shopping itself. They were responding to a series of reports that companies like Amazon.com, Google and Microsoft had passed on buying the company. Those stories followed Amir’s report that said Lyft had discussed an acquisition with General Motors but decided to solicit other bids from strategics.