They have as much chance of helping as watching dr. Phil.
No, the best option to find out what he is thinking is to ask him personally :)
No they are scam artist. Try maybe flirting with him and see what happens. If worse comes to worse you can just ask him. Try to live your life and just be happy though. What will be will be. If it's not meant than it won't.
I would highly recommend that one stays away from tarot cards. Delving into the occult is something one should avoid.
Just give me your money, and I will tell you what you want to hear. :)
Best way to know what he is thinking is to ask him.
Your friendship will change if you date. It will grow into something else. It may stop however, if you break up but asking what he thinks shouldn't put you at risk if you don't let it get awkward.
Stay away from someone else imposing their thoughts onto you (tarot cards) Make your own decisions.