How do I know she enjoys it

When I have sex with whomever I try my best to make them orgasim but like how do I know she actually liked it she “squirts” and like her eyes get all big and her legs shake a little and tighten against me but like did she like it how do I like really know I’ve asked her like what’s her favorite position etc and she’s like been vague I just like do the stuff she like reacts to the most but like I don’t know and it’s causing me to be all tense and not having a good but she hasn’t said anything so idk