Me and my boyfriend have been really into hair pulling, holding each others arms down, choking even sometimes ( not like hard or anything crazy ) just enough to incite adrenaline also spankings and handcuffs not full on fifty shades just a little bit to where our adrenaline is going while we're having sex it drives us crazy we love it but, do you think this could potentially harm our relationship ? Or is it weird in any way ? We have no intention of actually hurting each other and do perfectly normal couple stuff like cuddling and have never hurt each other before in the bed or outside of it. So it's completely safe, but should I be worried/cautious about where this could take  us in the future ?