When flirting, you ought to be looking out for evidence of interest. If you see at least 4 of these signs in the body language of the individual you are with, it's likely that they have an interest in you, and you are being given a green light to move things further! One. Lengthy eye contact. Eye contact maintained over a period of 4 seconds or even more is weird between casual buddies or buddies, although not among lovers, and it can be rather menacing, but if you're flirting with somebody and ...