The show hints at the consequences of poor choices, and most of Mike and Harvey's lies and bluffs are a means to a positive end -- ie., helping an innocent client. Mike repeatedly reminds Harvey that lawyering can involve both winning and caring.
Kissing and sexual tension with implied sex. A woman wears lingerie, etc.
Unbleeped swearing includes the words "s--t," "d--khead," "balls," and "douche."
Drinking, Drugs & Smoking
Some social drinking. A secondary character smokes and sells pot and uses terms like "weed" and "bud."