Don't fade to black and skip to the wedding. Show the morning after: "Last night was weird. But I'm glad it was weird with you." That realism earns reader trust.
Contemporary stories are increasingly showing characters who are virgins by choice, career focus, or simply because they haven't met the right person. This moves away from the idea that being inexperienced is a "problem" to be fixed.
Modern scripts prioritize the conversation leading up to the moment. This adds a layer of maturity and respect to the romance, making the eventual intimacy feel earned rather than forced.