Boyfriend doing shrooms for first time with female coworker…

My boyfriend is going to be doing shrooms next week with a female coworker who is quite a bit younger. I’m not knowledgeable on shrooms at all - is this something that I would need to be worried about them having a connection? Does it make people more sexual? I wasn’t invited and I don’t know her so I wouldn’t want my first time to be with strangers anyways…