Great photos of your sexy wife as always. Have to say it appears pretty obvious she like posing for you and is quite willing to forgo the one breast rule when she thinks the photos will not be sent to your friend.
As has been suggested in the past, you need to expand your audience as there was too much reliance on one person, your friend. Try going to a pub in a different town where you are unlikely to know anyone for a light lunch or dinner and a few beers or beverages of her choice [or just some beverages mid afternoon] and then walk around the town taking photos of the sights with your wife in the frame of course [along the lines of showing your friend how hot it was by your wife being topless.] Try getting her to flash you so you can take pics. Or walks with your wife dressed in more sexy / revealing clothes like you did in the forest and along the canal and take photos there, slowly getting to where there are more people. A few beverages along the way always help reduce inhibitions. Posting on OCC under the same name and showing your wife has some risk as she more likely will stumble across this and other threads where you have posted her in the past, and that could be bad as you posted without her permission, and she was wanting to have strict control over what was sent to your friend before. Would think a new name / ID on OCC would be better, as this is definitely the best site to use.
You could show her a couple threads on OCC without logging in and let her see all the positive comments. Then make posting a couple of her photos under a new ID a fun dare tonight!!
Regarding your friend, think a little patience might help. You have been friends for a long time and that friendship deserves some understanding despite him being irrational. You wrote a while back that he has not and does not really have a girlfriend, and that had bothered him - to the extent that he stopped wanting to see more pics of your wife. He got past that, and wanted to see the pics and your sharing fun started again. Maybe he really likes this new girl, but is so desparate / needy / jealous of anyone else who spends any time with her that he does not know what to do and is scared he will lose her, so he gets angry. He is behaving irrationally and immaturely. Maybe he is a bit of a control freak. Who knows. Depending on how you value your friendship with him, maybe your wife could reduce her contact with this new girl and maybe the 4 of you schedule something together. Just an idea... Good luck!