Hiyya, there is this yaoi i've been looking for for a while and i legit cant find the name of it.

Here's my bad memory synopsis of the story:
It's about the uke sending love letters to the seme (i think by leaving them in his locker). And the seme starts to fall in love with the person writing the letters but, here's the catch, he thinks the person sending the love letters is a girl. I'm pretty sure at some point the seme starts leaving notes for the secret admirer and asked for their phone number. Meanwhile the uke knows that the guy he likes thinks he is a girl so he's reluctant to give him his number but after a bit they end up texting and junk.

Any of these?
Omae De Nakya Dame Mitai (2nd story)
Kijima-kun
Mobile sweet honey
Magic mail chocolate (1st story)

While a couple of those stories have severely similar plots none of them are the one I'm looking for.

To add to the one I'm looking for the seme has a female friend who he talks to about the "girl" texting him and I'm pretty sure its a several part story or might even be its own book. I might have read it on myreadingmanga.info but I havent had luck finding it there o3o