So I had a few chats about my earlier post, and like I usually do, I picked the male brain. That's when I tapped @SingleCityGuy on the shoulder, who told me flat out this was, by "definition" a CB -- cock block.
As it turns out, he had a similar experience with a co-worker (a taken one, at that) that he shared today! While I encourage you to read the whole post, "Tale of a Greedy Wingman" (it's good), he makes an interesting and simple point which I've included below:
Your job as a wingman is to help your bro out. Sometimes your designated as the wingman, other times it’s automatic....You can’t give up your wingman responsibilities in the middle of the job... Potential wingmen and women need to remember one thing, you are there until the job gets done!
I think that sums it up nicely, don't you think?