He gives her the talk like this: 

"Things with you and Adam have been progressing emotionally for weeks now. I suspect that pretty soon, you're going to start getting more physical and women are never too prepared. So what I want you to do is take this with you when you go overnight with Adam."

Here's the thing: men worry that if the bring a condom the woman will be turned off because it comes off as presumptious. Women don't think to bring condoms because they think the guys want to handle it. But in fact, a man finds it very reassuring when a woman comes prepared.

In my opinion, he's going a little further than a contract obligation to bring up the name Trojan. He was asking women to be realistic and prepared when headed into a situation where sex is a possibility, and that the responsibility to be safe is on both partners involved. Angel does act embarrassed and is worried to be perceived as a "slut," but Steve adamantly assures that it's better to be prepared.

I am so proud that he addressed this topic on this show.. it's an important message and men and women regardless of sexual orientation need to hear: