My boyfriend said he didn’t nut but got really soft

So me and my S/O having sex and he said he didn’t nut but he got very soft and wanted to keep going I was very wet than normal and I had a lot of white discharge after sex that I never got before and today while I’m showering I noticed my kitty smell like him it smells like his nut do you think he really nut in me and is lying about it?or am i just dragging it ?