What should you look for to know whether he/she's truthful and suitable mate for you? Date a woman on par with you. As in don't reach out of your league.
How to lead casual conversation with a romantic spark? Aspects of flirting that distinguish it from the ordinary courtesy. What are attraction turn-offs for most people?
How to find something in common to talk about? What kind of signs do girls give you when they're interested? Follow this advice and eventually you will have to work on figuring out which girls you want to keep.