How to tell if I like him platonically or romantically?

Maybe this sounds a bit weird and confused but I’m struggling to differentiate between platonic and romantic feelings for a my friends with benefits. Now unlike a lot of friends with benefits relationships we’re not just hooking up we’re genuinely very good friends and do things outside just hookups, however I’m struggling to fathom out my feelings. I literally love this guy and spending time with him but I can’t decide whether he’s just my absolute best friend or there’s something romantic there. Of course we’re attracted to each other that’s why we’re friends with benefits but how do I know if the love I feel towards him is simply platonic?
How to tell if I like him platonically or romantically?
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