I've been in training in gyms for over 20 years, so been 'exposed' to a lot of people in that time.I honestly don’t think he was hitting on her at all. It looks like he was asking a question, perhaps “hey is this your last set?” and wanted to use those dumbbells. I mean let’s be honest, even the most un-self aware guy isn’t going to approach DURING a girls set. They’ll wait til she’s finished or something.
Hasn't happened for years, but I've had a couple of idiots try starting a conversation/asking a question when near the end of a heavy work set. Can recall the Surge of anger that went through me at the time. Probably helped me push out an extra rep or 2, so probably should have thanked them afterwards