what do y'all think

I understand open relationships and polyamorous relationships and why people do it and I don't shame it. But a guy on tinder surprised me by randomly saying he was in a open one. Should I pursue it or is that too complicated. Btw, it would just be physical. he seems nice and respectful enough. and he cares about girls getting their orgasms. I just need to get laid but idk if this will be worth it, but I'm sort of open to it! comment your thoughts. His gf knows and they both fuck other people