She said that she actually liked they way he took charge, it made her feel sexy in a way. Like she was being naughty and wild. However, she said she would not like it all the time.
This won't be the first time your wife has used this technique to seduce a pool boy when the two of you are on vacation. So you know what is going to happen. She's first ask him to put some on her back, then she'll lie on her back and express some concern about her breasts getting burned through her thin bikini, so she'll take off her top and encourage him to cover that area with lotion. And then she'll turn over on her stomach so he can put lotion on her thighs, and while he's doing that, she'll spread her legs to encourage him to move his hands up to her private area. After - there can be no misunderstanding about her intentions, and her seduction method has never failed to work in the past.
And you laugh a bit at the way she described what's going to happen as "probably" she'll have sex with him. "Probably"? You both know it's almost an absolute certainty.
Nice one!
She just has to give into the idea of two guys.