<human>: Give me the gist of the text in a nutshell

I recently got out of a four year relationship and have been exploring casual dating. I have been casually seeing two people--one guy and one girl--for about two weeks. None of the involved parties currently expect exclusivity. 

I have been experimenting with BDSM with the guy, Chris, and as a result, have quite a few noticeable bruises and hickeys on my upper body and tops of my thighs. It's fairly obvious that they are not from me falling accidentally or just bumping into something. All injuries can be covered up for work, but I am seeing my female partner, Autumn, in a couple days, and I am concerned about her asking about their origin. 

If she does ask, should I be honest and simply tell her that they are from having rough sex with another partner or should I try to avoid directly responding? And if I should go with the latter option, what would be some good ways of ducking the question?
<bot>: Casually seeing two people. Had rough sex with one of them and not sure how to explain the bruises with the other one.