His ex know sum I don’t ?🤔👀 UPDATE

Ok so this may seem so childish but here goes

My bf put up he’s in a relationship with me on Facebook after we’ve been dating 3 months . His ex that he still converses with here and there put “😐” in the comments and that was it . He commented “what”. No reply. I slid in his inbox like wtf ? And he’s like chill idk cuz we don’t even talk like that . I told him I wasn’t all that trippn bout it but why do y’all think she put that ?? Just curious.

UPDATE: so I asked him if the girl told him why she put that and he said you worried bout the wrong thing just know I addressed it and don’t message her either . I said ok what was said and he said the asked her why she was being messy and he said she gave an answer so I said what was the answer and he’s like WHY!? And I’m like cuz it’s my business and he’s like I’m not gonna tell you because you not gonna leave it alone and she’s a non factor I’m like how she a non factor why u liking her half naked pics on Instagram why she complimenting you under your pics ? WHY SHE COMMENT THAT “😐” UNDER YOUR RELATIONSHIP STATUS POST. Then he said he’s at work and he’s not gonna argue with me and hung up.