How to compliment your boyfriend<br>Compliment his face. Your boyfriend's face is an important part of what makes him who he is. By complimenting his eyes, smile, or overall handsomeness, you can let him know how attractive you find him.

Can we draw the following conclusion?
There are many books and guides available on the topic

Select from: (I) Yes. (II) It's impossible to say. (III) No.