Peeping at a neighbor in the bathhouse

I'd like to share a story that happened to me last summer. My wife and I rented a dacha in a small village, and we shared a bathhouse with our neighbors—an old wooden structure where everyone took turns steaming on weekends. My neighbor, Liza, a young widow in her thirties, lived alone, with a stunning figure: full breasts, a narrow waist, long legs, and a butt so perfect you couldn't take your eyes off her. I'd sometimes see her in the garden wearing short shorts, and it turned me on, but it never went beyond fantasy. One hot evening, my wife went into town on business, and I decided to take a steam bath in the banya. I lit the stove and filled it with water, but then I heard footsteps – Liza had arrived too, apparently unaware I was there. She entered the changing room and began to undress, while I, already in the steam room, froze. The door to the steam room had a small, fogged-up window, but I could peek through a crack in the wall – it was an old banya, with holes everywhere. I couldn't resist peering in: Liza was taking off her dress, wearing nothing but her panties underneath. Her breasts were hanging out, her nipples protruding from the cool air, and she ran her hands over her body, as if massaging herself. Then she pulled down her panties, revealing her smoothly shaved pussy, and went into the steam room. I hid behind the stove, my heart pounding. She came in, splashed water on the stones, steam billowed out, and sat down on the bench, spreading her legs to wash herself. I watched her soap her breasts, pinching her nipples, then her hand slid lower – she began to caress herself, moaning softly. "Oh, so hot..." she whispered, but continued, her fingers entering her pussy, her hips trembling. My cock became hard, I couldn't resist and began jerking off, watching her. Suddenly she turned her head, noticed movement in the crack: "Who's there?" – but instead of being scared, she smiled. "Neighbor? Peeping? Well, come in, don't be shy." I walked in, red as a lobster, my cock sticking out like a rod. She laughed, "I see you enjoyed the show." She came over, took my hand, and pulled me onto the shelf. "Let's help each other." She knelt down, took my cock in her mouth, sucked greedily, swirling her tongue around the head. I stroked her wet hair, then flipped her over, spread her legs, and entered her—she was so hot and wet from the steam and arousal. I fucked her slowly, then faster, slapping her wet ass, and she moaned, "Deeper, neighbor, fuck me!" We came together—me inside, her scratching my back. Then we washed up and laughed about the situation. My wife didn't find out anything, but now, when she's away, I "accidentally" run into Lisa at the bathhouse. Peeping has escalated into regular encounters—and it's incredibly arousing.