Is it worth being friends with somebody who doesn't really respond or talk to you?

[wolf]

There are more people out in the world that are not as skilled in the social graces as others, so you're not alone. It sounds like you have given it a reasonable effort, but now you should throttle back and wait for them to respond. If the guy just needs space, give it to him. You will see what happens. Some people just eventually go a different direction. If he takes another path, then that is his thing. Focus on living your life. He knows where to find you. You've told him you're there for him and if he comes back, welcome him with a smile. If not, then carry on and make new friends.