Would you be offended if you got this in a message off someone you've been sleeping with for a month?

ok so there's a friend of a friend who i've been sleeping with for a month or so,,,but nothing serious,,, we just go out and have good time,,, both early 20s...is my birthday party/halloween party on saturday, in my flat,,,, and i want to ask him to come and was gunnna put on the message that he should come with whoever he wants but if they're gorgeous and rich, well then all the better,,,as a joke obviously,,,,but my friend was reading message over my shoulder and said if i put that it sounds like i'm not interested in him or like i'm putting him down or hinting i'm not interested now or something?? so better to put it or not? is just i want to keep the invite as light as possible as supposedly what we're doing is not serious (even though i'm liking him quite a bit now (obviously haha)),,, soooo to put it or not? or any other ideas to make message sound flippant and not like i'm reeeeally hoping he comes hahaha thank youuuu