THREE SMOOTH WAYS TO LET A GUY KNOW YOU LIKE HIM WITHOUT REALLY SAYING YOU LIKE HIM

1. The use of Positive body Language
The use positive body language such as crossing your leg towards/into him, smiling when he looks at you, keeping your arms open for him to hold when he is beside you, tickling him when he least expects it or playfully twirling your hairs are great ways to give him signs that you like without having to say a word.2. By Giving Him Admiration
A sweet smile and long eye contact show him that you interested. If he smiles back at you and tries to hold your eyes a bit longer than regular friends would do, it means he enjoys feasting his eyes on you (which also means he is interested in you too). score! *winks*3. By Getting Closer To him
According to Jeremy Nicholson, a social and personality psychologist on the 'Psychology Today'--"Moving towards another person closing the space between the two of you nonverbally communicates your interest".For example; Any time you see him passing by, don't just stay where you are and waving, move close to him to smile and say "Hi" or "Hey". You're non-verbally telling him that you like him.
[Bonus] Mention To His Friends That You Like Him
Just in case the above tactics don't work, try mentioning to his friends(especially his female friends) how you feel about him. You have to be careful who tell 'coz this is risky, some friends might say it to him the other way round or try to tease him(don't worry, they are just jealous!). If you keep mentioning to his friends that you like him but not every time though and don't tell his friends that you want them to pass it along. One day or so, his friends would bring it up to him that you really like him and you would be surprised to see that he will come to you seeking for your relationship(that's if he likes you too).-That's all.
Questions are always welcome. If you have any question(or anything at all) regarding to what is above, the comment box is open for you. Feel free to use it.