Loved season one it was new, interesting and very funny. The episode's had no fat on them, they didn't fall into the traditional format of use sitcoms/dramas.
Then season two through all that out and added all the traditional stuff in. The way the creator took the criticisms by the BDSM community has affect season two and not in a good way.
Season two goes out of its way to correct the mistakes they made and in doing so made the season dull.
The over correction drags and slows the second season down. Now I don't know the BDSM scene and I wouldn't know if the first season portrayed it correctly, i wouldn't care either way, and from what I read it didn't, but I wasn't watching the show for a real portrayal of the BDSM scene, if I wanted to know about it I would watch a documentary.
I laughed during the first season but not has much in the second, I looked at my phone during the second season, I didn't in the first.
Also the writing to me isn't as good as the first, the plot twists can be spotted by a blind person, they are that signposted it's like a man talking over the scene say take a note of this it might become relevant later, wink.
I also noticed that what happens to one of the leads also happens to the other, for example if something good happens to one it also happens to the other and it's they same if something bad happens.
I would recommend watching the first season 100%, the two leads are really great, they are soo watchable and pull you into there lives and you care about there friendship. The episodes flyby and you notice and you wish they were longer, whereas season two they episodes appear to drag, and the plots write themselves, the setups for later episodes are so in your face it's disappointing, only watch season two if you have to. If there is a season three well, I think I already know the arc and so will you if you watch season two.