1. One thing that always bothered him was killing. Whether it was a muggle, half-blood or pure-blood, killing always vexed him.

That's why he always hated the Dark Arts from a young age, because he thought that they did most of the killing. At least you only hear about Aurors dying; never once was there an obituary for a Death Eater.

When he joined the Order of the Pheonix, after graduating, he was surprised at how killing was routine for most of the members and it disgusted him.

He vowed to never take a life, no matter what, because a life is a life, no matter how rich, poor, dishonest or famous you are.

(He broke his vow once, when he had seen a Death Eater torturing Sirius. He cried for an hour, vomited three times and didn't touch Lily for a week.)

2. Until Lily, he only truly had on friend that was a girl. If he tried to befriend more, they would just fall for him, and he didn't want the guilt of hurting them on his conscience.

3. When he and Lily got together he didn't have to tell her that Remus was a werewolf. She already knew. Telling her about the cloak, the mirror and the map was easy; he didn't even mean to tell her. Telling her that he, Sirius and Peter were animagi was harder, so he let her figure it out herself, leaving clues and giving hints. She got it after two months of his 'slip-ups'.

4. How he and Lily got together still remains a mystery to him.

Yes, he could tell you the day of their first kiss (October 17, 1977), he could tell you the day she first pulled out the 'L' word (December 25, 1977) and he could even tell you the first time they held hand in public (May 7, 1978), but how they got together? Nope. He doesn't even know when it was (September 1,1971? August 8, 1977? October 31, 1977? December 25, 1977?)

5. When Dumbledore told him that Voldemort was after his son he knew it was the end. It didn't make much of a difference. They had gone into hiding when they had found out Lily was pregnant, but he knew that no one can run forever. And he gave up a little that day.

When Sirius said that Peter would make a better secret keeper, he agreed, not only because he knew that Sirius was stubborn and would never admit defeat, but also because part of him knew that Peter was a spy, and part of him accepted death.

He wish he could take it back, not only to get a chance to raise his son, but also, at the time they had not even thought of the consequences, hadn't even thought of what would happen to Sirius if he were killed. Watching Sirius suffering like that, because of his own stupidity was one of the hardest things about the afterlife.

6. He was spoiled, and he will openly admit it. He was a spoiled brat. He asked for something and usually he got it. Usually. He remembers when he was six, his family was visiting some friends that lived in a 

muggle neighborhood, and he saw little brunette riding a Tri-cle-cy (that's how his father had said it). He asked for one, but never got it. When the Cleansweep 1 came out he asked his father for on, but never got it.

As a child it peeved him, not getting everything he wanted, but once he got to Hogwarts he was grateful, because it was the usually that differentiated him from the obnoxious Slytherin Prefect Malfoy.

7. The Sorting Hat threatened to put him in Slytherin, he never told anyone, but the blasted hat thought he could do well in that house.

He thought the hat was mad. A Potter in Slytherin? The house was full of Death Eaters.

(It took him a friend, that had been placed in Slytherin, to change his mind.)

8. When he first found out that Sirius was a Black, he almost didn't befriend him. Almost. But he took pity on the boy and it was probably one of the best decisions he ever made.

9. When his parents died it wasn't much of a shock. They were old and everythime he visited them it felt like the last time he would see them.

His mum died first of spattergroit and his father went into withdrawel. Didn't eat, didn't sleep and didn't move, really. He was gone in a week.

He was sad. But he had already said his goodbyes and he is just happy his parents are at peace.

10. What he hates the most about Snape is that he cannot appreciate what he has.

He had Lily Evans as a best friend. LILY EVANS. Probably the nicest, most charming and witty girl in the school and he goes and messes that up because he wants to join the Dark Lord.

And then the ways he hurt her. He knows that Snape was hurting too, but he saw Lily first hand after the 'incident' she was off for weeks, hiding in the school and crying. He found her more than once (well all the time seeing as he has a map of the school) just talking to herself while sobbing about her lost friend.

Thank you to Dodger Gilmore who pointed out that I had missed 7.