Squirting

So I had sex with this guy who is really big. I normally am a squirter but I can control it. This time I couldn't! Everything was wet, he said it turned him on but I was just so embarrassed. It got to the point I had to stop because my whole body was trembling I felt like I was going to squirt buckets. I don't know if it's just how big he was that he was hitting my gspot all the time? Anyone ever have something like this happen?