You can't make a boy like you. Sure you can pretend to be into the same things as him but in the end you'd be fake. Relationships should never begin with lies. If there's a guy you like remember they generally like confident girls so just approach him. Guys get tired if being the ones to always do the approaching. What's the absolute worst possible, nuclear crisis level thing that could happen? He's not interested? Big deal, there's other fish in the sea lol
Be confident in who you are, and if he likes you, he'll let you know... Sometimes shyer guys try being friends first or dropping impossibly subtle because they think you're out of their league. But a confident more outgoing guy is likely to come forward with feelings for you directly.
Confidence if a guy sees a girl with confidence it shows him that you know how to handle yourself in all situations. Eye contact very important but glances not full on stare. Always have something in common. If you don't you'll never keep his attention. How to tell he likes you guys find any way to touch you. They tap you joke with you. Guys aren't as complex as you may think they make really good friends and are protective. Just be yourself