Did HE not do it!?? Knocked up by my trainer?

I just wanted to do some sport again and as I have so little motivation on my own, I ordered a trainer straight away. But he was really cheeky. He was always making side jokes about how I moaned or how sexy my outfit was and whether I'd rather go to the park to pick up a pair of young guys. If he can be that cheeky, so can I! And we both ended up nude on the couch. But I didn't expect him to just cum inside me like that!