Something is happening between me and him for 4 months now..
Neither me nor him ever said something about being together or anything like this. I guess his problem is that he has a lot of reading (study medicine) and he might not have a lot of time for me but recently he tried to make a relationship with an other girl but it didn't work out.. I can't talk to him because I am afraid of the possible rejection.. How can I make him tell me to make a relationship??

You can't make him do anything.

If you're afraid of rejection, the relationship is over.

Walk away. Get busy with life.

Wondergirl pretty much summed it up in just a few words. You can't make anybody do anything.

Wondergirl has novel t-shirt ideas.

I understand where he is right now... relationship limbo. It may not be that he doesn't like you... it may be more that he enjoys your company, but also enjoys the freedom of not having to call you all the time or having to see you all the time.

I suggest... take a chance. If you do, then at least you'll know.

I know it sucks to hear things like "you can't make anyone do anything", because you're thinking, deep inside, what if it was there, and all I needed to do was to make it happen? What if he was waiting for a sign? Why shouldn't I go fight for my happiness?

Whatever it is, obsession (over him) is bad.