DeeAnna will tell you that, if I am watching, I usually cum from watching her and her lover kiss. They hardly every get to sex - oral or otherwise - before I have ejaculated. I wrote a couple of stories if you care to read them. Dealing with what some call "cuckold angst"
All I know, for sure, is that the most powerful body wrenching orgasms I've ever had, were watching DeeAnna with her lover. I know that sounds crazy, but it's the truth. Sadly, I can't even come close to giving her the orgasms her lover has. We are not playing anymore, but at my age I would rather take a nap, anyway... LOL!