Tony clenched his jaws and averted his eyes. He looked like he was holding back. Marcella covered her chest with her arms and watched him without blinking her eyes.
She couldn't even think that he might not be interested in her anymore. The proof was in the pudding. He desires her.
He says it was out of love. She didn't believe in love anymore.
Aiden "loved" her and he wanted her to change to suit him. His version of love made her lose almost everything that once belonged to her. She lost her essence.
Tony's "love" already took her sister from her. What more will it take from her?
She didn't want to be deluded enough to think it was love that makes Tony desire her. At least she didn't think it was the only reason. Lust probably plays a major role. He talked at length about fidelity and how that belonged to both of them. He must be keeping away from women after their marriage and since she is the only one available to him, he probably finds her attractive.