I'm the kind of person who makes life-long friends in an evening, goes on amazing adventures, will make you laugh until it hurts or you cry or both, and still misses my dog who died last year like crazy. I may or may not make you soup when you're sick, but if I have some in the freezer, I will definitely bring it right over. I don't waste my time, and you shouldn't either. Be genuine; be kind.
If you're interested in a fwb type thing but don't want to make dinner, go to a museum, do anything remotely friend-like, then you're really just looking for benefits; stop wasting everyone's time with transparent bullshit. If you're not looking for anything serious, congratulations, you are in the majority but at least you're not being coy about it with that fwb nonsense.