Canis: The Speaker is good example of a poly relationship but theres a lot of painful stuff before it gets to the good part (and not all of it is translated yet). Choco Strawberry Vanilla starts out as two guys pining for one but gets poly at the end
I have tried choco strawberry vanilla. Honestly, there isnt much love in that one just mainly lust and it still has one sided affection. I'll try the other one. Thanks.
The First story of this one.
http://www.mangago.zone/read-manga/seikaku_warui_uke_ga_guzuguzuni_nakasareru_hon/
And unfortunately this is only a one shot:
http://www.mangago.zone/read-manga/satou_kun_ni_wa_kanawanai_sachimo/
I think I know of more, but it's too early and I'm too lazy (〜￣△￣)〜
I want at least one poly story where they're all inlove with each other and it's not just two guys pinning for one turning it into a threesome lol