Faking it PLEASE HELP!

Oh geeze so I've faked it my whole life so naturally when I met my current boyfriend 4 months ago, the first time we had sex I started with my fake noises and was quickly making very real noises but now I feel like I have to fake the start every time or he'd be like wtf ... So I've been doing that this whole time but this guy is my one ... I don't wanna fake the beginning forever ... What do I do?? PLEASE HELP!!!