The other day partner showed me messages his ex sent him saying how she missed him and she still loves him (this was on instagram so she could see he was with me and had a LO. Partner ignored it. Yesterday she messaged him again saying she loves him. Partner blocked her and today I went on partners phone because he asked me to reply to a message and I saw she messaged again saying she wants him back and partner already replied that he is with me and has son. And she said it can be there secret. Partner has blocked her again but she's just made a new account and has messaged again!
What should we do