Recently, my friend has been coming over quite often, making me think his stepmother might be trying to seduce him when he's not around. Turns out she was! She got him all hard and started sucking on his dick while he was hanging out with her. I accidentally saw them doing it! When I told her I wouldn't tell anyone, she said if I kept it a secret, she'd let me fuck her too. But in the end, we just ended up blowjobs. It feels better than hooking up with friends but there's something weird about it... What should I do?