How do you get someone to like you back?

You can't force someone to like you back. Every one has their own personal prefrences and choices. However, there are some steps you can try. Firstly, get to know this person. Without knowing someone well you cannot easily determine if you like them or not. Secondly, talk to them about how you feel. Chances are they like you back but are unaware of how you feel. Hope this helps

If you like someone try getting to know them so you're sure you like them personally not just physically then if they like you they will try to form a relationship with you.