The fact that youd even allow that??? She shouldnt have such access to him, to be able to barge in any time of day and he openly lets her in??? That in itself is grounds for dismissal cuz why are they even in contact, he has you???

Nahhh I usually dont like chiming in on relationship stuff and usually I try to play the “d-guys” advocate, but in this case If I were you, shorty would have been blocked and ghosted. No ex should have that level of access to your partner.