Looking for a hentai (could also be western, i dont care) where the girlfriend or wife cheats with another girl and her boyfriend or husband and becomes their slave/pet addicted slut. Bonus points if the girl is the girlfriend/wive's best friend or sister. Also bonus points for pet play, little play or etc.
sore de mo tsuma wo ai shite iru
is there one with the ones taking advantage being both a male and female? Friends of the female or something like that, or at least similar age.