Is it normal that i really like to be tied up?

I really love it when my boyfriend ties me up. Not full on bondage with a ball gag or anything painful I just like to have my hand tied behind my back especially when I'm giving head. I also get aroused when he tells me to do things (not even sexual things, e.g. him telling me to answer the phone) as long as its an order not a request it really turns me on. I know most women tend to be submissive at least sexually, but is it normal to the point that I actually think of my self as his sex slave and it turns me on. (It bothers me that I have this fetish. I think shouldn't be like this and this isn't a new fetish I've had fantasies about being tied up since I was about 13 but I never acted on it until about 6 months ago.). Also my boyfriend treats me well and is very respectful he is actually very kind, affectionate and cuddly he's not abusive or anything and I have never been in an abusive relationship and I have never had anything bad happen to me when I was little and I don't have daddy issues. Now that I'm an adult my dad is basically my bff. I also don't have any drug problems or anything else that would make me fucked up). I'm just really embarrassed that I have this fetish. The only reason my boyfriend even knows I have this fetish and he does it with me is because we were cuddle-wrestling one day and he grabbed my arms and pinned me on the ground and he asked me if I like that and I told him I did and he suggested (as a joke) tying me up during sex And I said I would try it. (I still didn't admit at this point that I had this fantasy he still today doesn't really know the extent that being tied up and just generally being submissive turns me on but he can tell I like it because he suggests it frequently and I always accept his offer to tie me up) Also is it normal to still like being tied up for the after sex snuggle? Do any of you guys have girlfriends with this fetish? is it common I read in Cosmo that it but I really don't think that the most reliable source? I'm afraid of what my friends will think of me If I ask them this question especially since I've always been the good girl and was the last of all my friends to lose my virginity. Girls please answer too if you have advice. (and please no perverted comments I just really want answers.) Also does anybody know how I can tell my boyfriend that I like being submissive in general. Like I would really love if he would throw me on the bed or tell me what to do sexually like to take off my clothes or or to give him head (I'm not as embarrassed about this as I am about liking being tied up I just need to know a good way to bring it up.)