Try flirting without using body language. Go on, give it a go. It can't be done. You simply can't convey romantic interest without the body getting into the act. To play a really successful game of flirtation your body must speak what your mouth won't say.
Most people I talk to about body language seem to have their main interest set in finding out the flirting signals of the opposite sex and how to know when somebody is attracted to them. In the interaction between males and females something funny always occurs. The first thing you can usually observe in male and female relations is that the girl makes eye contact with the guy she likes, and once the guy has spotted the girl making eye contact the two of them will lock each others gazes for a few seconds until she looks away. The guy then confused, sits there watching whether she does it again, which she usually does and this time smiles or giggles a bit giving the guy the confirmation he needs to decide to approach the girl. However, before doing so the guy and girl alike will both start grooming themselves: the guy will fix his tie if he has one on, straighten his pants and shirt as he gets up, and the girl will start playing with her jewelry, fiddling with her hair and crossing her legs.
Last week Kylie Jenner, the queen of bee-stung big lips, made an admission about her most famous feature. Despite initially denying that she had lip injections at just years-old, she finally addressed why she had undergone the cosmetic procedure at such a young age. From then on, I just felt like I saw guys staring at my lips. I felt like no one wanted to kiss me. Kylie Jenner would have only been in her mid-teens when she made this assumption.
Those, for some reason, flowed freely and abundantly from hand to paper and a bunch of other surfaces. She balked. Or a critical statement on the lack of women and breasts in our storied political history? She laughs at these questions.