<human>: She wants to break up with him, sleep around with another guy or 2 and him as well, in the process, but still expect him to be completely okay with it?

I've told him, that I personally couldn't accept it, but he's considering it.

I'm not 100% certain on what he's going to do.

She's a nice lass, but I don't want him catching some std (he's my best and one of my longest friends), but I like her as a good friend also, so they both mean something to me.

(She doesn't want to sleep with me, I'm not one of the other guys, btw!)

Any idea guys?
You did well with my last post, so I was hoping for advice for him, since he doesn't use R.

Condense the text into a few key points
<bot>: Best friends GF wants to take a break for a while, still see him and another guy or 2. I'm not one of the other guys.