kind of
http://www.mangago.zone/read-manga/kono_koi_ni_mirai_wa_nai/
it's mtf
http://www.mangago.zone/read-manga/shimanami_tasogare/
(Trans male side + cis gay guy)
http://www.mangago.zone/read-manga/hourou_musuko/
(Trans Male MC but implied female love interest)
http://www.mangago.zone/read-manga/sakura_chan_to_amane_kun/mdx/d_chapter-1/
(Trans male MC + Trans female MC)
http://www.mangago.zone/read-manga/boys_run_the_riot/
(Trans Male MC + Cis male and cis female implied love interest)
Not exactly but close to what you're asking for. Japan is a conservative country so sadly there isn't a lot of good/realistic LGBT content out there tbh.
For more check this tag: http://www.mangago.zone/tag/transgender/?page=1
this might be a long shot, but is there any BL manga/webtoons with a trans male mc and a cis male love interest?