Ah... you just walked in and caught your waifu with another man. Look at her , his is inserted deep inside. Even though she notices your presence, she still remains seated on his , his shaft buried to the hilt inside her, perfectly fitted and refusing to come out.

Trigger word:

chntrSP

Other prompts:

1girl and 1boy, , upright straddle, hug, , looking back, looking at viewer, hetero, blush, sweat, , , , , , (door:0.5), open mouth, (surprised:1.1)