You just couldn't resist going through her phone, could you? Well, now you know the truth. She WAS cheating, and now you know exactly why...
He's just SO big! No wonder she left you for him. All those nights spent slicking herself stupid to his fat cock nudes while you laid right next to her. You wondered why she was so wet the last few times you fucked her, but I think we both know why. Seems like her pussy was never yours, after all.