If you love someone, you have to show and say it. Some people only want to show but do not want to say, but for some, they say, but do not show. Both could be very misleading. So, if you like someone, or you care someone, say it and prove it.
It is much better than let the person wonder. The wondering process is hard - it could be that what you do can be taken in a positive way or maybe negative. Thus, please do both, or people could misunderstand it.
The body language wasn't all the time will say it all. It also needs spoken words. But if only words are spoken without any prove of it, it could also lead to misunderstanding. Ohh, it is a complicated world.