MILF wife gets fucked while talking on phone

A MILF wife chats casually on the phone, unaware her husband is sneaking up behind her. He pushes into her from behind, watching her face flush as she tries to maintain her conversation. Her voice trembles slightly as she bites her lip, fighting to hide her pleasure. He sets a steady rhythm, knowing she can't stop him without exposing her secret. The phone line crackles with static as her breathing grows heavier and more ragged.