Hello,
I need your help. I juct can's remember the title and mangaka of this yaoi.

This guy in high school was dumped by his boyfriend. Then he took to hanging with this nerd or science guy in the chem lab and the nerd tried to made a love potion for him so the boyfriend would back together with the guy who got dumped. But then when they were trying to find a chance to force the ex to drink the vial, the guy decided that he actually likes the nerd now and they do it in the lab room...

Thanks for you help... 🙄

[url]http://www.mangaupdates.com/series.html?id=31250[/url]

It's the second story I think.