Help find this bl

It was a beta x alpha story. It’s a short story with a max of like 12 chapters. Essentially the story begins with a beta who’s really kind to omegas, one day an “omega” gets into heat while the beta is trying to help however they both end up sleeping with one another. The following day the beta tells him that he’ll take responsibility and so they start dating. Come to find out that the “omega” was actually an alpha who likes to be held and so the point of the story is that the alpha is trying to hide the fact that he’s an alpha from his partner but the story ends with the beta finding out through his actual omega best-friend and letting the alpha know that he actually knew all. It turns out the beta knew all along and was just waiting for his partner to tell him. If it helps I remember that the beta wore glasses.