here's how I came to this conclusion. 1. In the same lore, Jolyon says "I'm not interested in your secrets. Please." So there's a secret, and it probably has something to do with Uldren. 2. While he was mad, Uldren doesn't remember Jolyon, his best friend. But he does seem to remember Petra, and doesn't seem to be completely hostile to her. 3. Lore book Most Loyal: Reacquaintance "[b]Petra Venj and Uldren Sov had long admired one another; there was an easiness about them when they were together, and a deep if unspoken affection. When the two of them joined forces in the field of battle, they were quick, effective, and dangerous. Theirs was a dance of death, and woe to the foe who met them in open combat[/b]." 4. Whenever you approach the NPCs, they say stuff. In the Dreaming City, she once said, "I can't excuse Uldren's crimes, bit sometimes, I can't help it, I miss him." You'd have to know him as a lot more than an aggravating snot to actually miss him. Before that, while doing the campaign Forsaken, I heard Petra Venj in Spider's lair saying "If Uldren thinks our past is going to stay my hand, he's mistaken." She basically implies that they had a past together. Here's my conclusion: I think that Uldren Sov and Petra Venj were in love. It's not really Petra and Cayde, because first of all, Cayde kind of flirted with a lot of different people, but Amanda Holliday now has Cayde's cloak, which would imply that they were together. And then the reason that Petra is really upset about Cayde's death is because she blames herself. She's never said why she blames herself, but I think I know why. Why would she put Uldren in prison in the first place? He'd already killed a lot of people. She was known for being rather vengeful already, I would've expected her to just kill him and be done with it. But if this is true then it could possibly be one of Bungie's greatest Easter eggs and I think it will definitely be covered in The Witch Queen. Uldren and Petra makes more sense. Plus, we all know that they were [i]at least[/i] REALLY good friends, but Uldren often didn't seem to care about anyone at all besides Mara, and Jolyon, both of whom he's known for thousands and thousands of years. Plus he's one of the original 891 yet he never seemed to think of Petra as a "child" like everyone else did. During forsaken she talks quite a lot about killing him considering that she didn't. Its clearly just talk. I will argue this point to my death because I have thought this ever since first completing forsaken in December and also because I don't surrender my opinions when they're unpopular.