What's wrong with my guy friend? Why did he act so weird?

ABChrist91
I am a college student, 22 years old, 5'2 ft 121lbs. Honestly, I am very shy, I spent most of my time at home. I never had many friends, just 7 (amazing) persons, 4 girls and 3 guys. We've been friends since our freshmen year in high school. Let's name my guy friends Kevin, Joe and Nick (as they're so close like brothers). Kev and Joe are tall guys 6'3ft 160s lbs, extroverts, likes to tease me until I cried! Nick's an average sized guy, introvert, a thinker, very out spoken.

I feel something's not right with Nick. I've been sick for almost 2 weeks now. Two days ago, the "gang" visited me, all 7 of them. But yesterday, Nick came again alone, he gave me this Chinese medicine. We talked a little until I mentioned about Kevin and Joe. Then he wrinkled his forehead. There was awkward silence for approx. 30 seconds, then he said,"it seems like you're comfy with those 2 clowns?it makes me jealous. I'm in the gang too, right?Why is it different with me?" Then I said I was afraid to approach him, its kev and joe who approached me first, I never said hi to new people, and he knew it. And then he asked why I accepted the way Kev and Joe teasing me (by picking me up without me knowing it then threw me anywhere they liked). He said it was disrespectful, plus I could get hurt, bruise, wounded, broken bones, etc. I should have convinced them I didn't like it. I'm pretty sure Nick knew that I told kev and joe like a thousand times, but didn't change anything, and I couldn't defend myself against two bigger and stronger guys.

Then I asked him, why didn't he stand for me?Why did he even laughed with kev, joe and the girls when I cried after they threw me and giggled? he knows I couldn't stop Kev and Joe until I managed to tell myself that it's not as bad as I thought it be, and learning to accept it for the 'gang'. He didn't answer and went home instead. I couldn't sleep that night, and arround 3:45 AM, he texted me, said that I was not only naive but dumb. A real woman never let anyone treated her like a toy, instead she will make people respect her, with charisma.

His message frustrates me, What does he want from me? Why did he act so weird?Thanks for reading. I need your perspective, guys and girls. Thank you very much.
What's wrong with my guy friend? Why did he act so weird?
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