My heart breaks for Lom, over many aspects but I don't feel bad for him at all. Regardless of what he's experienced, he knows the difference between what is right and wrong or what should be done and not. And the reason I know he does, is by his own words, actions and expressions. He has chosen time and again to hurt Mookrin and Wiwa, solely for his own gain and his cowardice, and he knows it. That's why almost losing Mookrin lit a fire under him. However, instead of focusing on her, apologizing and working to be a better man in a healthy relationship, he tries other tactics to keep and prove his devotion to her. One could argue that he could feel what he's doing is his only way, but he didn't even try to get back to where they were before he left her (in spite of Mookrin's unresponsiveness) or help her resurrect her career, no, he focuses on something else that doesn't belong to him, masterminded by his tyrant mother. Cutting Mookrin out once again, for his schemes, disregarding her feelings, thoughts and position. I blame him for his actions, for his selfishness, for his misguidance, his misplaced jealous, his sense of entitlement and arrogance but I don't by any means diminish the love he so clearly has for Mookrin. It's an odd dictomy but it's there. I said before that Show has written him as a tragic character and there's no way he won't have a tragic end. I also find it poignant that he will believe he's the reason (or had a hand in) Mookrin's death/demise because ultimately that's true. Also he may leave the living confused about her feelings for him, and though hard to watch, is justified because he robbed himself of that knowledge in more ways than one.
Edit: Also, this character is written, acted and directed very well. For, in different hands, this character would have come across much less relatable and worthy of discussion. Without those things, I wonder if anyone would truly believe in Lom's love, confusion, heartbreak, isolation or torment and just chalk him up to a smarmy money mongering playboy. And I have truly enjoyed Alek's performance here, from start to (almost) finish.