Hear Horny Ex.

When my ex who I have a son with, got a new boyfriend the thought of the two of them got me really horny.
I txts her one night to ask about our child and she told me her and her boyfriend were having an "early night."
I left immediately and raced to her house in my car.
She lived in a flat but the communal door was always unlocked.
I heard her moaning already as I climbed the stairs.
I stood outside her door and stroked my dick knowing she was loving being fucked very close by.