Besides conversation, there are other ways of letting people know that we are interested. Eye contact and body language somtimes speak far louder than the words coming out of our mouths. The stud of Neuro Linguistic programming shows us how to establish rapport simply by mirroring anothers stance. If you tilt your head to one side and smile and I tilt my head the same way and smile, we feel a certain connection. If you want to add body lanugage to your repertoire of rapport building skills, there are numerous books on NLP that you can find at your library. The danger however might be relying on the use of this or any other rapport building skill strictly as a way of disarming other people rather than learning to be more honest and self-disclosing yourself.
If you have learned some tricks on how to use body language as a powerful when dating, then check out singles and personals at the free online dating site to meet someone and try your experiments.