pochi to tama, secnd couple
The theme is almost like this. :)
http://www.mangago.zone/read-manga/miteranneeyo/
It's a very sweet read.
They like same gal/guy then end up together instead.
http://www.mangago.zone/read-manga/parallel_lines/ - Ch.1-2
http://www.mangago.zone/read-manga/pochi_to_tama/ - Ch.3-5
http://www.mangago.zone/read-manga/renai_kyoutei_nukegake_nashi/
http://www.mangago.zone/read-manga/neji_no_kaiten/
http://www.mangago.zone/read-manga/naruto_dj_daikirai/
I'm looking for a yaoi manga where the uke and seme like the same woman at first and end up getting into a fight over her. Then they end up together. Are there any mangas like that?