looking for a yaoi manga/s :D

I remember the first one (Not sure if it's a one shot) about the uke being and office worker and how he "disguised" himself and had a one night stand with a guy he didn't know it was his office workerl like the uke did this a few times not sure(also its not the one with the cheating seme manga for those who think it) P.S. if there are more that share those themes I'm open for suggestions :D

Second is about this guy who left his lover cause he had to go abroad for something and I think the lover got overweight and I forgot what was left. Thanks :D