Why dao, despite being in this industry? Because indeed there are a lot of lonely and obsessed wackos out there among customers
So it's a defence mechanism for the MLs.
Not the first time I have heard of smitten and obsessed customers spending a lot just to visit their ML almost daily and buying time also.
Some ML will "play" these customers and get a lot of sales clocked and gifts. But some just want to work here, as they have intact family back home and no wish to be courted and hounded by lovestruck customer. These can create a lot of trouble for them and their shop if not handled carefully.