i have had friends that i had casual sex with, he has had an experience with you that is intimate so its not unusual for the friend to feel emotionally attracted also. The type of caring that he did was nice and could mean he wants a relationship or just that if wants to be nurturing towards you. . If you don't want anything more than friends with benefits them you need to tell him. Don't be afraid to talk about what you neede. Sometimes a friend with benefits can be more adventurous and experimental in sexual ways.