Angela Smith & Peter Amsterdam lovers?

I heard that Angela & Peter used to be major sharing partners. They had sex all the time. Can anyone confirm that?

One thing we know for sure is they would have had lots of time in bed together if she was Maria's top secretary & lived in a small Home with Peter & Maria. They would have been having lots of sex.

So why does Peter have such a holier-than-thou victory about Angela's murder & talk about her in such a cold manner. Is he trying to downplay his connection to Angela to keep himself out of the police investigation?