Hi... first post... just need advice! So I broke up with my partner 4 months ago and since then he’s had 2 new partners.... our latest argument is about him wanting to introduce our children to his new partner who he says he’s been seeing 6 weeks. I am adamant he must wait a few months before introducing them. He only sees them for a few hours every few weeks (he’s seen them 4 times at the most in the last 4 months) and I think this should be quality time with our children rather than with a partner. AIBU? Do I have a leg to stand on legally?