Is it permissible for a husband who is married to two women to kiss his first wife in front of the second, and is it permissible for him to sleep with them in one bed, and is it permissible for him to flirt with them, or caress them, or have intercourse with them in one place, knowing that they live in one house and there is no jealousy between them?

Kissing and caressing one's wife in front of her co-wife is not permissible due to the violation of modesty and the exposure of what should be concealed. The Prophet, peace and blessings be upon him, said: "Modesty is a branch of faith," and "Modesty brings nothing but good," and "Modesty is entirely good," and "If you have no modesty, then do as you wish." We have previously clarified the impermissibility of such an act during intercourse in a prior answer.