He told me ''I cheated'' when he was drunk but has denied it since, it's likely he cheated right?

My boyfriend of 3 years clearly said ''I did cheated. Just once though. think it was 8 months ago or so... just once, once''. He was hammered at that moment.

Now he's denying it ever happened and that he says whatever BS when drunk. Is likely he cheated right? I'm thinking of leaving already. Should I treat this a truthful confession?

Yes, he did... time to ditch him.. drunks tell the truth
No, maybe he didn't.. drunks might not mean it
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14 d
Now he's saying what he told me while drunk it's not true at all, that he has no idea why he said all that but it's not true.
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14 d
I have no evidence, nothing at all. All I got is his drunken statement, that's all.
He told me ''I cheated'' when he was drunk but has denied it since, it's likely he cheated right?
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