I am a married woman with 3 children. I am having problem with my husband regarding his facebook friends.

Question

Assalaamoualaikoum

I am a married woman with 3 children. I am having problem with my husband regarding his facebook friends.
He is a jeweller and in order to advertise his products, he has created a facebook account since 3 months.
But he is using this account mainly to add sexy women and chat with them at night when am already sleep.
We had arguement on it and several times we fight. Each time he says that he is doing nothing wrong. He is not meeting them. But i cannot tolerate this. He said that he will stop but he stills add these women. I can't bear it anymore.

Kindly advise.