
My favourites in this category are:
http://www.mangago.zone/read-manga/sorenari_ni_shinken_nandesu/
http://www.mangago.zone/read-manga/papa_i_love_you/
http://www.mangago.zone/read-manga/gochisousama/
There are also lists of these things.

How could I forget this one!
http://www.mangago.zone/read-manga/himegoto_asobi/

Or this one:
http://www.mangago.zone/read-manga/koishite_daddy/
It's a popular sub-genre. I think a lot of women identify with those men.

yaoi list of single-parents
http://www.mangago.zone/home/mangalist/7549/
these are the ones i like to re-read (⌒▽⌒)

http://www.mangago.zone/read-manga/mizu_no_haru/ (chp 4-> but you're welcome to start from the beginning (▰˘◡˘▰) )
http://www.mangago.zone/read-manga/yozora_no_sumikko_de/

Oh my god, thank you for the first one! I didn't knew this one and it's really, reaally adorable! I was a bit sad and now I'm feeling all fluffy.
I need single-parent yaois! Cause I've this one awesome yaoi called ikumen (after) and I so want to read some more mangas like it! Waaah! Pls help me! (づ ̄ ³ ̄)づ