Complex sentence: Max, in these disguises, misleads Rita into thinking Justice slept with Nikki, making her jealous and angry with him, effectively cooling any desire on her part to begin a relationship, although Justice remains cautiously persistent.
Split into simpler sentences: Max, in these disguises, misleads Rita into thinking Justice slept with Nikki, making her jealous and angry with him. This effectively cools much of the desire on Rita's part to begin a relationship, although Justice remains cautiously persistent.