Are all girls squirters?

Me and my boyfriend have been together for a while now. We have had sex, he fingered me he has went down on me before but I could never get to that ponit to were I wanna cum or squirt. And I can never get wet before he touched me down there. He think he not doing it right but it feel amazing when he does it l sometime it feels like I have to pee and I hold it i know that mean im close but I can never relax so I do. I need tips or ideas of how to relax and let myself go.