How and when should I (25m) approach my girlfriend (23f) about the fact that I’m pretty sure she’s never cummed from having sex with me?

I’ve (25m) been having sex with my girlfriend (23f) for about a year now. We’ve been together for 3 years total. <br><br>I’ve been racking my brain to find signs that she’s cummed, and I just haven’t found one yet. She’s super quiet and doesn’t moan very much during sex. She doesn’t quake or shudder when we’re done. She doesn’t say anything about cumming. I’ve never felt any hot liquid. I pay very close attention to her genitals and I just haven’t seen any signs of cumming. <br><br>I’ve been trying my hardest to get her to cum. I ask her what feels good. I pay attention to her body language. I’ve started incorporating different vibrators in the bedroom. I’ve been trying for over a year though and nothing has worked, and it’s getting really discouraging. <br><br>I want her to feel good. I love her and I want her to have as much pleasure as possible. I also don’t want her to feel like she has to fake an orgasm. I’ve heard that a lot of men can’t tell that their partner is faking.<br><br>I don’t want to accuse her of faking. I just want to ask her if she’s cummed. If she hasn’t cummed, ask her how we can work on getting her to cum. If she has cummed, then ask her to tell me how I’ll know the next time she cums. <br><br>How should I go about asking?