Is my boyfriend being selfish, or am I overreacting?

I've been seeing my boyfriend for more than a year now, but have known him for much longer.

I love him very much and he is very caring and considerate towards me most of the time.

But at times this happens... [examples]

*Whenever he wants to talk with me over phone I attend his calls or call him.. But when I want to talk with him he says I'm busy I'll call you later .. (unless its really urgent)

*whenever he wants to meet me I say "Okay".. But its doesn't happen when I ask him.

*For being with him I cancel all my plans.. He comes over to see me only if his plans are cancelled due to some reason.. that too only after his friends also turn down his offer of hanging out somewhere

*He wanted me to learn cooking and I started it the next day and served him his favourite dish the next week itself.. But when I ask him to do start spending some more time with me he says I'm tired.. Or I'm busy

*I wait for his calls even till late night and when he calls me late he talks for some time n then says "I'm sleepy I'm gonna sleep".. I would ask him I waited this long controlling my sleep just to talk with you.. He'll say " If u feel sleepy u go n sleep .. I never asked you to stay up for me"

I'm starting to feel like "giving more and getting less each day" I'm feeling neglected and I've started to be moody all the time.I'm afraid that I'm depressed.Sometimes I feel like he's being selfish.I understand that he has a life of his own and I'm no way possessive or jealous.I just need him to give me some more importance. I wouldn't say he's not caring or loving.. Just wanted to find out whether I'm the one who's making a mountain out of a mole hill

An important fact is that he works but I'm still a student.. by the way I'm 20 and he's 22.