I forgot the name of a manga that I was reading a while ago. I'm pretty sure it's shoujo.
a girl's family is in debt or something and they sell off the girl to be some guy's wife. she moves into his huge mansion and has to take care of a goat or something. he explains to her that the only reason he married her is so he can produce an heir, except he thinks she can get pregnant from a kiss. he might've been a romance novelist or something like that too.

if you can help me out, that'd be great. thanks. ^_^

billion girl

yeah, I think that's it. thanks so much!