(have) got a thing going (with someone)
(redirected from got a thing going with them)(have) got a thing going (with someone)
To have or be in the midst of a romantic or sexual affair with someone. A colloquial variant of "have a thing going (with someone)." I hear you've got a thing going with Jeff from accounting, is that true? I got a thing going with a lady across town, but it's nothing too serious.