No, he was not "a lover of the EU", in common, I am sure, with most Remain voters. The EU as it stands is flawed - but in the choice between Remain and Leave, it was the better choice.

If the Remain vote had just been "lovers of the EU" the gap would have been far far wider.

Corbyn set out to get people who questioned the wisdom of staying in the EU to vote to do so. And with 63% of Labour voters going for Remain, he helped make it a narrow victory for Brexit. If Cameron had managed to persuade only a bit more than 42% the Brexiters would have been beaten.