Speaking as a formerly shy and inexperienced female, being with a more experienced male who's pressuring you can be intimidating. He wants it so bad, and he's already got so much more experience, one can be afraid of messing up, doing it wrong, appearing foolish, God forbid causing pain because of poor technique. First time he asked if I minded if he grabbed the lotion bottle during a hj, I had to ask him what I was supposed to do with it. He and his buddies reportedly had a good laugh behind my back.
First time I tried simultaneous hj's, it was so intense that not only did I stop my hand in place, but I inadvertently took a 'death grip' on....it. I couldn't focus on what my hand was doing, and well....I'm sure you've heard me say before that sometimes I need something to hold on to

But I was incredibly embarrassed that I'd hurt him. Which can't help but set the tone for future, shall we say lessons.