I very certain that I'm wasting my time...
Why are you so sure you are wasting your time?
Because the other person doesn't want to know anything about me...
You time is important, never waste it on anything that is not worth it. Being smart like realizing it will help you manage it properly though.
That's easy to say...
It may be easy to say, but if they're not interested in you it's only responsible to find someone else. Don't you want to do better things with your time, or find someone who will listen? Maybe the right person is right in front of you and you don't know it!