Yes - and the fact that she marries him prove that.
Harry Potter.
Ginny Weasley, ofcourse
Yes, Harry Potter loves Ginny Weasley whom he later married.
Ginny was infatuated with Harry Potter from the time she met him, at the start of Book 2.
Exactly 78.5 love-unit.
She was awesome enough to get Harry Potter to fall in love with her.
Ginny Weasley, Ron Weasley's younger sister.
Yes, Ginny and Harry later got married and had three children.
In Harry Potter and the Goblet of Fire and in the Order of the Phoenix, Harry's love interest is Cho Chang. However, in Harry Potter and the Half Blood Prince, and in the Deathly Hallows, his love interest turned girlfriend is Ginny Weasley.
No. Ginny and Dean dated for a while but they later split up. Ginny started dating, and later married, Harry Potter.
Harry and Hermione were never intended to be together and never had any feelings for each other. They developed a relationship that was more like brother and sister. Both of them were interested in other people.
They don't exist in real life, they are fictional characters.