I think you opened the door by clicking "like."
This is twice in a row that I'm disagreeing with you. "Liking" someone's activity isn't an opening to being hounded for money. The only time I think that "you haven't sponsored me yet" is when the target has promised to sponsor and hasn't followed through. I wouldn't necessarily object to "Glad you like it. Would you please consider sponsoring me?"
It is sort of surprising when we don't have the same reaction, isn't it, Art. We do often agree.
But I think a single comment about an actual sponsorship--even one that begs the question of whether she INTENDS to sponsor him--is just not that out of line in that situation.
Of course it didn't commit the OP to anything--nobody ever said it did, not even me. I just think that if you chime in on that sort of post, it's not that weird for the person to say, "hey, put your money where your mouth is" or something similar.
And this wasn't even all that rude, honestly. I don't consider it to be "calling her out in public." I think the OP is feeling extra sensitive (or guilty?) about it or something. I hope she can just blow it off.
I'm pretty much w bah12:
I don't think you did anything wrong by liking a status about his excitement for the marathon, but I do think it would have been better to ignore his comment about your lack of sponsorship. At this point though, I don't think you owe him any explanation nor do I think giving him one will matter. Whether he was calling you out in public or just joking is irrelevent. This is a subject that hopefully neither of you ever bring up again.
I also don't think she did anything *wrong* by liking the status, but I also think that if you chime in on a conversation like this, you can sort of expect the person to nudge you about sponsoring them.