there are shoujo manga that are fujoshi bait. but most are just undertones. (and actually, seinen had them too because seinen mags are random AF)
but here are the shoujo ones.
yuri on ice
kyou kara maou-sama
adekan
vassallord
please save my earth
loveless (josei)
uragiri wa Boku no Namae wo Shitteiru
i know there are more but these are the only ones i could recall at the top of my head.
http://www.mangago.me/read-manga/cherish/ The girl's parents are gay couple. It's also a very sweet story! One of my favs.
Thx
Cardcaptor Sakura
Is there any shoujo manga that have bl couple?