cumming? w.o orgasm???

often when my bf and i have sex, i release a bunch of liquid but I dont feeel an intense orgasm it just feels good for bit and he tells me when it happens and he always wonders how i cant feel it when i cum or know when but like... is that cumming?? or like? i orgasm while masturbating so i know its not that and i’m confused. Ive read that when turned on your body builds up fluid but thats all i know. educate me pls👍🏽