You sound like a smart girl and you've already got the answers for yourself.
Your BF is manipulating you and your feelings. The truth is, he will stop asking "permission" to be adventurous and just do it, without regard to your feelings and relationship. Be strong for yourself and focus on Your happiness. Try and use this as a life lesson now, because there will be men just like him that will weave in and out of your future. Good luck to you!