No. It makes you look accusatory and pursuing, and she'll only lie anyway.
NEVER confront infidelity until you have an iron-clad (or near-iron-clad) bank of intel, and only then with a confident "I know all about you and so-and-so . . . " speech.
If you DON'T "know all about," then you're not ready to confront, and you need more intel.
