TMI Cherry 🍒 popping

So my and my boyfriend have been together for a very long (3 Years )time and he’s been very patient with waiting on me to have sex ( I’m a virgin) I really want to let him be my first but he’s really ... blessed and as you can imagine I’m very .. tight ...... sooooo is there anyway I can practice for it ? Like any stretches 😂😂😂 I’m so in experienced and I know he’s willing to take things slow but I don’t wanna be in pain