Romance MMC who’s a virgin

So l've recently remembered a scene but I cannot find what book it is for the life of me—enough that I've started to assume I made it up or read it on wattpad in high school.

The scene I remember has the two main characters alone in a room on a couch and things are getting steamy between them when someone (possibly an advisor or assistant to the mmc) walks in on them. He immediately leaves but the mmc makes a mention that of course he would be walked in on the first time he was doing something.

At first I thought it was a fantasy because I believe the mmc was waiting for his fated mate or something like that, but I remembered a different scene where he asks what the strings he felt were and she had to explain her iud.

I fear this is now lost forever to me so l came here in case anyone else remembers this. Also—I posted in namethatbook before realizing this might be the better place to ask (just trying to exhaust all my options before giving up).