Exactly that. That is why Harry became so upset. His subconscious was telling Harry the exact same thing when he was probably hoping his subconscious would contradict him, as it often does on other issues.
Yeah, I reread that section last night. Harry's subconscious first points out that Lara has many good points and that it could work between them. Then his subconscious further points out that Thomas and Justine were happy, then further points out why Lara's kiss didn't burn him. Calls into question if it was really true love between Harry and Murphy? Then adds the most important point, it's about
balance. That's when Harry throws the glass against the wall. Balance, that is the key, and that's what haunts Harry in his grief more than anything. Was their relationship one of real true love? Or more of codependency? I think Harry is wondering too.
Why do I say this you may ask.
1] The soul gaze or lack there of, not until she was dying and nothing found out how she feels on the whole. I think Jim did that on purpose so we'd wonder, and Harry also wonders. Harry isn't really the most self confident guy, in some things he is, his will, power, etc. he is very confident. However his confidence in his past romantic relationships? A little shaky, so that hint of doubt.
2] Have you noticed that Harry really depended on Murphy's judgement, more than his own. In Cold Days she refused to give him back the Swords though he was appointed their Custodian, not her. She convinced him that somehow she was morally superior or gave that impression and he wasn't especially because he felt doubt since he was Winter Knight now. Even Michael told him this was something she took upon herself, and he went along with it. He tried to tell her not to bring the Sword of Faith with her when they went to confront Nick. She did anyway, relying on her judgement, not listening to Harry. Okay, you could say it was out of love, but it also was out of arrogance that she knew better. My point, one sided, and Harry went along with it.
3] As Mab told him in their confrontation, when Harry blames her for the banner which enabled Murphy to enter the fray though she wasn't physically up to it. Mab points out Murphy made that decision on her own, yet again ignoring Harry. Yeah,yeah, Harry's fear for her, over protective, yada, yada,yada.. However his judgement in this case was correct, but he still went along with her. No discussion as equals, no compromise as equals would do. What I personally found annoying about Murphy since Changes was she was sounding more like Harry's mom than an equal. Harry also became increasingly dependent on her judgement, that's why I say it had become a codependent relationship, which can be mistaken for true love. That's what was feeding Harry's guilt during the worst of his grief, why he felt responsible because he never really spoke up when he should have and it cost Murphy her life.
Back to Lara and Harry, that kind of dependency isn't there! Even when Mab was happy as hell because she thought Lara was completely dependent on Harry now.
That wasn't the type of relationship Harry wants, and I think his subconscious could explain it to him now very well.