Abuse or not?

I'm freshman in one of university where i live on. But i had found new close friends here, named Wi and Pe. We are so close, mmm for now... LOL I don't know what will happen to us, but i hope we're be besties until we're be grandpa and grandma. Anyway, you might think why i put 'abuse' word in this blog. It is because i feel so abused. In these two days, there is another friend who joined with us, named Ai. When we ate in this noon, i sit beside him. And while he overlap feet, he wiggled his feet than without realize his hand touch my leg. It was so sucks. Firstly, i just dodge with go out with finding fresh air outside then unreliable i go inside and its happened again. So i move to another table while pretending (again) to studying. I'm not angry because i think he won't do that and purposeful did that. And im so sure when he started hold on my shoulder. Is it abuse? What should i do then?
The point are he is so fucking freak:
1. He join with us while he never close with one of us, you know for minimum reason
2. He called me in this morning to make a sure that english class would start at 10.00. Why me? Why don't you call Gee, your best friend? (I haven't tell you about this)
3. Why did he touch and hold on to me?
4. He told me he want to go to my house tonight to have an exercise that i'll get at 03.00
IS IT FREAK, ISN'T IT?
Fyi: He'll ask a girl to be him, so it won't be a crush on reason. Thanks for reading. Helping comment please ;(!