Need Advice: Making a girl Squirt a lot of fluid

Before my girlfriend and I have sex, I usually like to finger her and make her squirt. I've made her squirt probably about 20 times total now. However, when I do make her squirt, it's not really that noticeable. Some fluid comes out of her vagina but it's more like just getting really wet. I haven't been able to make her actually squirt out a stream. She says that she was seeing a guy before and he made her squirt twice and each time he was able to make her squirt out a stream and lots of fluid she said. Like enough to fill the bottom of a large mcdonalds cup. I HAVE NOT been able to make her squirt that much and it's frustrating. I'm assuming that the more fluid there is, the better it feels. Am I right?

We usually start by massaging her belly and vagina, then slowly putting in one finger and massaging the Gspot. Then introduce another finger (index and middle finger) and begin doing a running man/come here motion with my fingers to massage the gspot. I slowly increase the intensity and speed per her request, and after about a minute or two she begins to squirt; or get really wet and she stops me by holding my arm. Sometimes I make her do it again right after. I'm assuming there's still fluid she wants to get out? When I increase speed, it's difficult to keep doing the running man/come here motion and I tend to just curl my fingers up and begin pulling my arm upwards very quickly until she squirts. Am I doing this wrong? Should I massage the gspot longer with mild intensity to build up more fluid? I want to have it so she's squirting out like she did once before, a more explosive squirting would be more satisfying. What is the key to get that stream shoot out?

 

try having her sit on a large mcdonalds cup like the last guy did.

 

Yeah seriously, I'm just gonna dump her.