See, being "attracted" to someone implies there is a degree of desire, physical attraction, sexual attraction, etc etc...but when there is friendship, and only friendship, the emotional level is different. Friends cry with each other, laugh with each other, feel anger for and the need to protect each other, but there is no sense whatsoever of a physical desire to be close to that person. Of course, people who are friends do fall in love, and lovers are very often friends too, but when there is only friendship, the mind does not make those connections that you would with a lover, or someone you were attracted to.
There are so many people that I know personally who are best of friends, who 'love' each other but are not 'in love'. They would go to any lengths for their friends, but they don't nurse a desire to be with them, to marry them or to have their babies or something like that đ They do not, unlike AP, feel jealousy when the other is happily in love/married with someone else; they do not wish that it was them in place of the other person. They are simply happy that their friend is happy, and beyond that they have no desire.