He told her that it was to make her look unavailable. An engagement ring is a token of love, not a symbol of a weird possessive relationship. Besides, if it were like a "technical" engagement ring, who would accept if he doesn't care enough to be clear and express himself?

An engagement ring is a promise with the intention to marry in the (not too distant) future. Sounds like he definitely doesn't want to make that promise, he just wants a **** buddy to himself.

#46, are you insane? Telling her to wear a fake engagement ring so other guys think she's "unapproachable" isn't posessive and controlling? Jesus. Not only is he acting like a kid hiding a DVD that they /might/ want to buy later, he's basically saying that he doesn't trust her to tell other guys that she's in a relationship. On top of which, he showed a pretty clear disregard for her feelings. (Or he's just thick.) If he wanted her to have a token showing she was his girlfriend, a heart-shaped locket/pendant would have sufficed. In getting her hopes up and then cutting them down the way he did, it seems clear to me that he's probably kind of self-centred.

52, She can wear it on other finger (index finger?) - if it fits. This way, she'll get the ring without keeping other guys away - at least until her boyfriend explains his behavior.

#58, "he told me it wasn't an engagement ring, but I should wear it like one to keep other men away". Try actually reading the FML before you reply to comments with completely irrelevant arguments.

74, Try actually reading replies and thinking before writing another comment. His request is ridiculous. So the best idea would be to take the ring (it's a gift) and ignore request. If you wear it on another finger (not on the ring finger), it will not look like engagement/wedding ring anymore, so it won't keep "guys away".

#89, I read your comment, and I thought about it. I came to the conclusion that your opinion on what OP should do with the ring was irrelevant to the discussion at hand and the topic of OP's creepy posessive boyfriend.

92, you're jumping to conclusions, as all other people do. His request is weird, but that's about it. You never met the dude, haven't talked to him, and yet you already conclude he's weird and possessive. Your conclusion might be incorrect. One possible scenario I already mentioned - dude wanted to give it as engagement ring, but freaked out at the last moment. Either way if ops worried about it, she should talk with him and figure out what the heck it means. I still remember FMLs when guy get dumped by GF due to some kind of stupid misunderstanding on the day where they wanted to give the engagement ring.

#96, I don't see what's "jumping to conclusions" about making an assessment of a person based on their actions and choice of words. Even if he freaked out before proposing (which he had no reason to, given that OP was clearly not going to reject him), asking her to wear a regular gift like an engagement ring for his comfort (and ignoring her own feelings) is showing controlling qualities, and also implies that he doesnt trust her. As another commenter said, it's basically akin to outting a dog on a lead, and doesn't show much trust on his part.

116, you have incomplete data about situation, so yes, you're jumping to conclusions, by filling the blanks using your imagination. The only way to get complete info is to interrogate her boyfriend in person, and you can't do that.

#124, incomplete though the data may be, I find it very difficult to believe that a not-creepy, not-posessive, guy would want to treat his girlfriend this way. I don't think I need much more data than what is here. OP's boyfriend's choice of action and words was chauvinistic and controlling. I honestly don't see why you're so desperate to win this argument, but tbh I don't really care anymore, so have a nice day. :)