My boyfriend struggled to stay hard he says it’s because he had mdma yesterday is this true?

He struggled to react full errection multiple times but we did have sex and he finished. But he’s never been like that before

He was on drugs Friday and Saturday until early morning. He said he was on mdma and other drugs and a lot of alcohol. But today he hasn’t been.

Would it be the drugs or has he slept with someone else and is struggling to get hard with me now
Drugs
Slept with someone else
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My boyfriend struggled to stay hard he says it’s because he had mdma yesterday is this true?
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