Am I wrong for being offended?

My boyfriend and I have been together almost 2 years, and he's always been way less intimate, but recently even less. I have a very sexual personality and I feel like sex is really important to me, but every time we get the opportunity, he was "too tired".

He and I rarely get to spend night together, meaning already limited sex, so over Labor Day weekend, we got to have a sleepover every night, and only made love once... every other night he just crashed even though he knew how excited I was to be able to show him my love finally.

I feel like I'm always the one initiating sex, I'm always the one to tell him I'm horny or that I miss his body, he almost never tries to get things going. He used to be all over me, and now that he's gotten more comfortable, I feel like he's lacking effort.

Am I wrong for being so sensitive? I get he's not as sexual as me, and because I'm a VERY sexual person I I understand that it's hard to meet my needs, but it hurts considering we don't get to make love often, and when we have the opportunity, it doesn't seem important to him.

I always take every opportunity to make him feel good, because it makes me feel good knowing that I'm pleasing him. Why isn't this reciprocated?