I've posted about my ex lots here. We finally split, 6 months ago after a long time of things being wrong. I've started tentatively going fir coffee (twice) with a male acquaintance who I've become closer to as he split with his ex around the same time and we started supporting each other through it. STBXH has completely gone off the rails, he's barged into my house and refused to leave. Threatened to make my life hell, tried to guilt me into things (eg how could you go for coffee with a guy while we are still married, that's cheating), refused to pay maintenance, changed plans for the children last minute, had found male friend on fb and messaged him etc. I now ignore his messages etc unless it's regarding the kids.
Anyway today I went out for the day with male friend as its STBXH day with the kids. I didn't tell STBXH who I was with but he guessed and messaged me constantly although I ignored him. He then messaged and said the kids wanted to come home early so I left and went home to meet them. This evening I was snuggled up on the sofa with 5yo (the younger 2 were in bed) and ds said mummy, daddy told us about your boyfriend. I nearly lost it and text STBXH but managed to stop myself. Make friend and I have agreed that we wouldn't bring our kids into this for a long time as we just want to see where it goes with no pressure and we don't want to involve the kids unless it progresses. I explained to ds that mummy has a friend that's a boy that I like to go out for coffee with but he's just a friend. Ds seemed to accept this and moved onto other topics but I'm furious that STBXH would put my son in this situation. We have mediation a week Monday and I plan to bring this up but how should I handle it in the mean time?