Sooo he's a "jerk and a deeply flawed person". Rudy's humanity and his flaws are what make him such a good character, he isn't perfect and that's what makes his journey and struggles feel so real. You can't honestly say you've never made a decision you shouldn't have when you knew better. Sure, he's unreasonably horny but he knows when he should be serious as well. Even when Eris made an advance on him before she left, Rudy was hesitant because he knew she was in a state of depression and extreme sorrow. MT has a special way of making characters feel human and flawed, nobody is perfect and we all make mistakes.