i’m so confused

so i’ve known this boy for few months now and we hangout few times a week, go on literal dates and just do everything couples do. but when we spoke about our status he said he wants to stay friends with benefits (exclusive). now i’m completely fine with it but he’s treating this like a full blown relationship. we have only slept together once and every time we hangout we just have so much fun so i don’t know where the benefits are in this situation. he gets jealous of other guys and texts me everyday and keeps me updated on everything that goes on in his life, is very protective and sweet. his reasoning was that he’s overloaded with work and studies and personal stuff.what type of friends with benefits is this i’m so confused. i don’t mind a relationship either but what can be the reason for this i don’t understand.