Advice needed...

So when I masturbate I try to rub my clit it just doesn't seem to get me escalated to cum. And the very top part of my vagina where my lips first open makes me cum but there's not even a part there? Kind of hard to explain. It's like when you hump something and that feeling you get after you're done? What exactis that because that's how I feel and it feels good. I feel so bad because my boyfriend eats me out and plays with my pussy but I just can't find a spot that really gets me going. My clit is so sensitive I can't even keep my legs still when he touches it and I want to squirt so bad but I'm not sure I even can. 😭