(23F) need advice dealing with bf’s brother (35M) holding onto concert tickets he might not use

I need some advice on how to deal with a situation that involves my bf’s brother.

Back in January I bought tickets for a concert and in the heat of presale I panic bought the first tickets I saw. Later that day I was kinda upset because I wanted better seats, so I bought two new tickets (yes I know how stupid that was). So now I had two extra tickets. I didn’t really know what to do with them since selling them back wouldn’t even cover half of what I paid, so I was like okay I messed up, might as well just give them away. I decided to give them to my bf’s older brother and his wife, they were super excited and accepted (I gave them for free btw). Then in February they told my bf they might not be able to go anymore because of their kid’s sports game, which is fine. But here’s where I’m getting frustrated… when they realized they might not be able to go, they didn’t offer to give the tickets back. They just kept them and are still waiting to see if there’s a game that same weekend. Now it’s about a month away and they still haven’t said if they’re going or not. They keep saying they’ll wait until the schedule comes out. The problem is the concert is in a different town, so I need at least a month’s notice if they can’t go so I can give them to someone else and they have time to plan and book a hotel before prices get even worse. I’m also kinda upset that my bf isnt telling his brother anything about this, i know if the roles were reversed and it was my sibling I’d tell them to give the tickets back so they don’t go to waste. My biggest thing this whole time is I just don’t want the tickets to go to waste. That’s literally why I gave them away in the first place. I know I gave them the tickets so part of me feels like I don’t have the right to be upset, and I don’t want to be the type of person who gives something and then hovers over it. But at the same time it just feels inconsiderate to hold onto them when there’s a good chance they won’t even use them and other people would.

( side note - i got offered money for the tickets a couple weeks ago but they needed to know asap if they can have the tickets so they can request work/ get hotel- so that adds to the frustration because literally someone offered money for them and now they don’t want them anymore because it’s taking forever to get them an answer )

Is it bad that some part of me wants to just see how last minute they tell me and when/ IF my bf even steps up and asks his brother to give them back if he’s not sure he’s going to use them?