Is that a red flag?

I have been for three dates with that guy and we had really good time. In the third date we also had sex but it was something that we both wanted at that point. For the next week he will be out of town because of his work. Before we said goodbye he asked if I want to go to a party, that will happen in 2 weeks from now, with him. I said yes and then he told me that he was supposed to go with his friend and asked If I have any available friend for his friend. To be like 2 men and 2 women. I told him that I do not know if my friends would be OK with that but I will ask. Is it weird to ask me something like that at the current time? I am not interested to be me or my friends fucking buddies for them.

Is that a red flag?
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