This is kinda stupid but

So I recently started dating this girl and I’ve stopped jerking off cause I have a problem getting hard sometimes when I constantly go. But she’s a freak and I can’t keep up with her drive so sometimes it goes soft half way through. Especially when it’s the second time or third in the day. It’s really embarrassing and she says she gets it, but ik it’s agitating. Is something wrong with me and is there something I can do?