<human>: Can you provide a brief overview of the text?

I'm 21f and he is 25m. We've been friends for about a year and FWBs for 3 months. We actually decided to date and that was going well, but he didn't want a relationship and I was going to travel over the holidays so we agreed to become FWBs. Its been good and we have great sex and its fun. Nothing is really wrong so much with the benefits part of things. 

Last week, him and his roommates had a little get together for The Walking Dead premier and a lot of his friends were over. He invited me to come over too, but told me in text basically I know we aren't together but don't flirt with my friends or anything like that. Which I probably wouldn't have done, but it felt kind of rude for him to say it too.

He has always made it super clear to anyone we aren't together and wants us to keep the FWB thing secret. Which is cool.. I'm down with discretion too. It just makes me feel kind of bad. He makes me feel kind of like a slut sometimes... with the whole don't flirt with my friends, or like off-hand comments like i'm so glad we never dated, i wouldn't have trusted you lol. 

So question is in the title, but its basically is it okay for me to feel offended over what he said about his friends? Is it even okay for him to say that?
<bot>: FWB invited me to a party, but told me before not to flirt with any of his friends. Kind of feel offended. Should I be?