Is His dick normal?

Hey y’all, so I recentlt started dating

my best friend like 5 months ago and I couldn’t be happier. Well, starting in February when we became sexually active, it was his first time! But his penis kinda went flat twice, once after he was trying to put the condom on and then again when i was about to ride him. Then this past weekend when we were getting freaky in the car his little fella went flat AGAIN and i had to gear him up all over again before I could even show him what a blowjob feels like. Is this normal for guys or what? Cause I want to make sure I’m always mentally prepared to have to gear him up 1-3 times before we can actually get into it. It’s just really frustrating cause I stay on go lol, but I just wanted you guys’ opinion!!