Love: A warm and tender liking; deep feeling of fondness and friendship; great affection or devotion.
Obsession (Obsess): Fill the mind of; keeping the attention of to an unreasonable or unhealthy extent; haunt.

I guess you can say that my love for this guy started my first year at Hogwarts, at my first school Quidditch match.
He was a third year and the best keeper i ever saw. And he was totally cute!
I saw him more often after that first match because we were in the same house but i never once spoke to him. In fact, everytime he entered the same room as me, I ran!
My friends, the good ones, tried to encourage me to talk to him.
My other friends, the bad ones, said i would never have a chance.
I refuse to listen to the bad friends.
Second year was the year i tried out for the Quidditch team, the year I finally came sort of close to Oliver Wood, who was now a fourth year.
Second year was possibly the year my obsession started to grow? Possibly. I'm still trying to figure that out.
Third year was the year Harry Potter joined the team and the year Oliver became Captain and finally talked to me.
"Hey, Daily!"
"Yeah?" I called back, breathless. Trust me, i was not breathless because he talked to me. I was breathless because we had a brutal practice. I swear!
He motioned me over to where he and Harry Potter stood. As i joined them, he slipped a friendly arm over my shoulders, making my face get hotter than it already was.
"Harry, this is Nicole Daily," Oliver said.
"Nick for short," I said, throwing in my two Knuts.
"RIght. Well, Daily here is our fastest Chaser."
I grinned, sort of knowing where this was going. Harry had a nimbus two thousand. I did too. But, i have more experience. I climbed on my broom.
"If you can catch Daily, then you can catch the Snitch."
I shot up in the air and, a moment later, I heard Harry come up with me.
"Try and keep up, Harry!" I called.
For a good while, Harry was far back but he surprised me by getting horribly close. His fingertips almost brushed my broomtail, but i pulled a flip and flew, upside down, under him. Harry gaped in surprise and i grinned at him.
As Oliver called us in, I smiled and said, "Nice try, Harry. You almost got me. Next time, huh?"
Harry simply smiled and nodded. He was a good kid.
Oliver did that training thing with me and Harry often. Harry never managed to catch me (even though he caught the Snitch).
My fourth year, i started to realize that i only had this year and next to get Oliver to notice me. I mean, actually notice me (as a girl, not just a Quidditch player). Crap.
Fifth year. He was leaving this year. Double crap.
Towards the end of our year, towards our very last game, i took my broom out and flew around the pitch a couple of times, doing flips and reverses and straight down drops.
"You shouldn't practice so hard," came a voice from the stands.
I grinned and flew towards him. "Coming from the guy who eats, sleeps, lives, and drinks Quidditch."
Oliver Wood shrugged and I down next to him.
"It's going to be wierd, you know, leaving here," he said. "No matter where i go or what Quidditch team i'm on, there'll be nothing like Hogwarts."
I didn't say anything because i figured that wasn't what he wanted me to do. Plus, i didn't think i could talk if i wanted to.
"What about you?"
I turned to look into those deep brown eyes. Big mistake. "M-me?"
"Yeah. You've got two years left. It's never too early to start planning."
"Well . . . I plan to be the first girl on a male's Quidditch team."
I felt stupid after i said it. He was going to laugh, i knew it. Everyone did.
But he smiled. He just . . . smiled. "I think you can do it."
"Really?"
"Really. I think you're a fantastic Chaser. Johnson hardly has a one up on you. Plus that, you've got spirit, Nick."
I smiled. He thought i was a fantastic Chaser. He called me Nick instead of Daily.
"There's just one thing i need you to do for me first," he said.
"What's that?"
Oliver stood and reached out his hand. "Help us win the Cup tomorrow."
I grinned and took his hand. "Deal."
And, with mostly Harry's help, we won the Cup.
Oliver left and Quidditch seemed less there, though i still gave my all to it. But i missed him horribly. I thought of him every day, every night . . . .
And that's what lead me to ask myself if i loved him or if i was obsessed.
By definition, i suppose you could consider me a little bit of both.
But technically, if you're in love with someone, wouldn't you think about them every day, every night?
That's what i'd like to think, anyway.
It's not healthy to be obsessed.