one thing leads to another

one thing leads to another

if one things leads to another, a series of events happen, each one caused by the previous one. I only asked him in for a coffee, but one thing led to another and we ended up in bed together. (never in continuous tenses) People don't usually decide to become spies. They agree to do someone a favour and one thing leads to another.

See also: another, lead, thing

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one thing leads to another

an event or activity results in another that you have usually not planned. I agreed to help him paint his house and one thing led to another until I ended up helping him fix up his kitchen.

See also: another, lead, thing