Suspect so has been with other man--turned on instead of off

Keeping it real (true story), my significant other came home from work (a hotel) a couple of hours late once. We were finishing up the evening with some sexual fun. She was EXTREMELY wet. She smelled different than normal. I was pretty certain she'd just been thoroughly shagged. We had a GREAT session. Outstanding. I was absolutely aroused by it. She later admitted she, indeed, had been shagged prior to that session. We've relived it as it works for both of us. Is this normal?