Friends with benefits 🤔

I am currently dealing with this guy, I’m not a relationship type of person & neither is he but we get along so well. The sex is amazing 10/10 amazing & we share a lot of things in common. We have a very close friends group but nobody knows we are fucking.

Now here is where i have a problem....

I’m starting to fall for him but I don’t want to ruin our friendship between & also mess up the relationship with our other friends.. so my question is how do I go about this ? Do I tell him how I feel or do I keep everything to myself & just continue feeling him but stay cool ? 🤦🏾‍♀️🤷🏾‍♀️ I need help