Why did he like Blaine?

Well, it's kind of impossible not to like him. That's part of why Kurt was so irritated by his existence. People like Blaine shouldn't be allowed to exist. 

Why?

Because people like Blaine are impossibly perfect and make everyone else look bad and set you up for disappointment in the future because no one is as wonderful. People like Blaine shouldn't be allowed to exist because people like Blaine don't exist. Only Blaine is as perfect as Blaine. 

It also wasn't fair how attractive Blaine was. At first glance, from a distance, you can tell that he's cute and also adorable. He's a bit short, but not too short, and has broad shoulders and a trim waist. His head is topped with brown hair with a seemingly impenetrable helmet of gel, and even from afar, his smile lights up a room.

Yes, Kurt Hummel wanted Blaine Anderson.

Why?

One reason was that Blaine was incredibly sexy. From close up, you almost need to catch your breath because WOW. Blaine's eyes are big and hazel, but vary from green to light brown to gold, and are framed by thick, long eyelashes. They're always bright with emotion and enthusiasm, too. His eyebrows are triangular and it shouldn't be attractive but on him it somehow is. His lips...fuck, the things Kurt would do with those lips. Perfect and pink and just begging for attention. 

But wait, there's more! The more of him you see, the more attractive he becomes. Underneath his dorky, nerdy wardrobe, Blaine conceals an even greater bounty of hotness. Kurt knew because they had PE together. Kurt didn't stalk him in the shower—he's not creepy like that—but he had seen Blaine in the locker room occasionally. He had seen Blaine dripping wet wearing naught but a towel around his waist. His hair was wet, and you could tell that when it was free from the restraints of his customary gel helmet, it was curly. Kurt wanted to see what Blaine's hair would be like dry and gel free, would like to run his fingers through it as they made out or as Blaine wrapped his pretty pink lips around Kurt's needy cock. 

Blaine wasn't overly muscled, but he was extremely well-defined. Kurt often found himself wanting to lick the stray water droplets that slid down Blaine's bare chest. His chest was covered with the perfect amount of dark hair, which Kurt followed down Blaine's body with his eyes as it narrowed until the trail came to a halt at the towel. The towel hung low enough on Blaine's waist for Kurt to catch a glimpse of the perfect V-like definition of the muscles leading to the area that was (unfortunately) covered. In all his nearly-naked glory, it was evident his arms were strong and hell, Kurt had to make a stealthy exit because he got hard merely thinking about Blaine's strong arms lifting him up and holding him as Blaine fucked him against the wall. When Blaine turned around and put things in his locker, Kurt was able to take in the sight of Blaine's back. Kurt could see his muscles working, moving beneath the skin, and looked longingly as a drop of water dripped from his wet hair down to the small of his back, and then disappeared beneath the towel. 

Kurt liked romance, don't get me wrong. He wanted romance, but that didn't mean he didn't like the idea of rough, heated, dirty sex as well. In fact, he really liked that idea. Especially the idea of that kind of sex with Blaine.

Even when Blaine covered himself with clothing, you could still imagine what lay beneath those dreadful cloth barriers. No matter what pants Blaine wore, you could always see a rather prominent bulge. It wasn't monstrously huge, but it was hard (no pun intended) not to notice. Well, at least for Kurt. Another thing that was clear, regardless of Blaine's attire, was that Blaine had a great ass. Honestly. Blaine's ass was perfect. Oh, the things Kurt would do to that ass...

Besides his magnificent body, though, Blaine was also exactly the kind of guy Kurt always wished he could have. He was kind, polite, sensitive, caring, talented, intelligent, funny, helpful...the list goes on for quite a while. In addition to that, he liked the things Kurt liked. They had many shared interests, like musicals and music and the Beatles and Kurt had even seen him reading Vogue once.

Kurt avoided Blaine as much as humanly possible.

Why?

Because Blaine could, obviously, have any guy he wanted. If he wanted Kurt, he would have probably made his move by now. He hadn't, so he probably wouldn't. Kurt never made a move on Blaine, either, because even though he was head bitch in charge at McKinley, he couldn't.

Why? 

For several reasons, namely:

-He hadn't really been in a real relationship and didn't know what to do.

-He didn't want to be rejected. 

-He didn't want to set himself up to be hurt. 

-He refused to live in anyone's shadow. As bright as Kurt is, how could he possibly outshine the flawless Blaine Anderson?