Not sure if this is the third one cause i read it a long time ago but it kinda fits https://www.mangago.me/read-manga/mimori_s_naughty_mouth/
Is the last one this one??
https://www.mangago.me/read-manga/a_dick_scovery/
first one maybe? https://www.mangago.me/read-manga/hanayome_wa_juunanasai/
Ok so this is a more common plot device than I originally thought. Unfortunately not :( the uke has like black hair and I’m pretty sure the seme is blonde. I think towards the end ish the seme disappears from the uke, and when the uke gets in contact with him again it turns out he left cause he was broke lol. Or something like that.
I’ve been looking for this one for ages. I used to frequent a different manga site from around 2013 until I discover this one around 2019 or so and ended up losing my list for that site when I transitioned. Never saw it or saw anyone bring it up all these years. And it’s about 10 years old now so I figured it was just gone for good atp. That’s so crazy, this is such a treat. I’ve tried asking about it before with no luck, thank you so much.

So these are some older titles, classic black and white manga from actually many years ago, but since this whole mishap and having to rebuild my list over again I’ve been thinking about old stuff I used to read.
So the first one is about a guy that has long hair and looks like a girl, and is like maybe affianced to the seme? Seme comes from maybe a wealthy family or something. I remover there being other brothers or maybe one other brother in there I don’t really remember.
Second one is the vaguest. Guy is gay but has no experience, ends up sleeping with his coworker or maybe a guy he met at a bar. It was very short and like weirdly wholesome. It sounds similar to the manga “under your skin” but it’s not what I’m looking for.
Last is the one I have the best description for. These two guys who are friends start fooling around with eachother, but one of the guys can’t get off. They basically spend the manga figuring out what gets him going and it turns out to be inside his mouth is his erogenous zone.
If you can find any of these I’d greatly appreciate it