I am new to this, looking for trustworthy adventure companion

I am very active, run, swim, cycle and race...
I have not experienced much of this sort of thing ..
I am only interested in men living in London or near by no more than hour on train. Also not interested in anyone within a relationship or marriage looking for something extra, I am up for having fun but would love also to settle down. Oh and i’m Not interested in being someone’s Dominatrix I’m quite the opposite.

43, Straight