I (29M) was out of breath when I was eating out her pussy and need advice on how to avoid this from happening next time.

I gave my girlfriend oral sex for the first time earlier today. I was out of breath for some reason and I felt awkward when I suddenly stopped after 10 minutes. I need advice on how to avoid this from happening next time.

Geez, it’s making me wonder if I’ll be out of breath when we have penetrative sex for the first time.