DP occasionally goes on silent meditation retreats, these can last upto 10 days - you are not permitted to speak or even look at the other guests during the first 9 days on these retreats. On the final day everyone gets to share a meal together and chat. On this final day DP shared numbers with a woman. When I asked why - as in whether there was some kind of common interest or work or some reason, the answer was no actual reason to have shared contacts? AIBU to think that as this person, number sharing wasn’t made available to me until I enquired about it , it is a bit shady? I have no problem with DP sharing number and making friends, however I find it hard to understand why you might swap numbers with someone you have spent 9 days in silence with and then shared a meal and a chat with ?