It is really impossible to figure out what someone else thinks or feels without talking to them about it, however.
Communication is key to any healthy relationship.
If you have concerns about the person s feelings for you, ask them about it. It may sound scary to do that, but if they like you, then they will be happy to discuss your concerns and calm your fears. If someone cares about you, then they want you to be happy and feel secure. If they aren t willing to discuss that with you, or you truly feel too uncomfortable to bring up the subject with them, then you must do some soul searching to decide if this is a good and positive relationship.