How is your bf like character wise? Does he leads you or does he likes to be lead by you? Even if he opens up to BDSM, do not expect that to change!
Now, I there are some BDSM long movies out there. I haven't checked them out, but I have seen a few BDSM porn flicks for free on the web that where 2 or even 3 hours long. Set up a date with your bf to watch them. There are not many, so that the chances of finding one to your exact specs are quite low, but you could always use them as an starting point...
Make sure to cum wildly once or twice during the film... That ought to call his attention for sure! If you don't know how to do this, I can show you how.
First off this is not a way one should approach a discussion with a vanilla partner about kink.
Second the post ends with the person ordering you to cum and if you "dont know how to he can show you" Big red flag there! This was a cast out in hopes a new person would bite and he would get some easy play. The original post in no way said it was seeking orgasm direction or play. This was a selfish dig at trying to muscle in as a dom under the guise of "helping"
I have to agree here with what
@poetrylover828 says. Dont approach this in a sexual charged manner as was first suggested. This needs to be a face to face talk in person sober and clothed. We all know we can all have clouded judgement in the heat of a sexual moment and that is not the way to discuss exploring kink.
I suggest knowing first why youre interested in it yourself. Know what kink things are you into. Then sit down and explain to him that you enjoy these things and care for him and would like to explore them together. Have some links to references for him so he can learn as well. You need to find out if he is even interested in the dominant side. If hes naturally submissive and you try forcing him into a dom role youll both find a lack of pleasure and eventually a collapse there. Check with your local community, take him with you to munches, lots of dungeons have demo nights or like kink 101 type things. A safe way for you both to spectate the scene and learn from experienced safe people in a safe atmosphere. Maybe even find a legit vetted mentor for the two of you so that you have an oversight as you both are new and learning. This is quite commonplace to have when both sides are new to the exploration. As two newcomers can be very dangerous due to lack of knowledge and experience.
I cant emphasize this point enough "PORN is not reality" Those vids and pics are all staged just like any other movie. They dont address the actual dynamic foundation, the rules, the negotiating, limits, safewords, aftercare, the dangerous and the risk involved. They are made for entertainment purposes. Actors playing a part.
i will direct message you a site with some links to good references for beginners so that maybe you can research more as well.