Gonna try to explain this,

I have had girls come over off of dating apps, facebook, etc (met online) where literally we’re just sport fucking. No real conversation or connection. Just wham bam. Get dressed and gtfo.

But occasionally I’ll meet someone who is nice and easy to get along with, someone I don’t mind just chilling and watching a movie. And I get nervous and I can’t beat the pussy as good as I would if I didn’t give a shit about them. Like my dick will go limp mid way and it’ll be disappointing (for me). Any advice fellas?