edited as she joined this site since!
Oh that is crap alright and really nice of you to consider your brothers' feelings.
Sorry to be nosey but why have you held off 2 years announcing your engagement? And why then all of a sudden this weekend for your announcement? What has changed? (Again sorry to be nosey) - it was little unfair I think for your HTB to tell you that he was going to re-propose this weekend....though maybe it slipped out.
Wait a couple of more weeks if you can and good luck to both of you.
Have the double celebration, enjoy it
god poppyseed that's mad!! Your family must have been delighted!!!
aww you're such a good sister