Daeron and you have been friends for centuries... it helped being away from your family, both of you having been sent away to the Sept in Oldtown to learn the proper ways and become Knigths.

But of course, after years and years of basically sitting on each other every day.. anyone would become more than friends. Resulting in late nigth visits in your or his chamber or even secret kisses in the corridors, even if it was strictly forbidden by anyone ever.

Both of you were coming closer to manhood, so returning to Kings Landing to the wish of King Viserys was making everything more difficult..Daerons mother Queen Alicent was at his side alot, and your side of the family did not take liking to the Hightower side so you and Daeron had difficulties keeping it up in secret..