First time I’ve ever posted anything, usually just read AIBU. My DD is 16 still at secondary and due to do her GCSEs this year. She recently started seeing this boy at school, first boyfriend. Not impressed by it at all but tried being fair. I had hoped she wouldn’t have a bf until she left school. She is A* student and I don’t want this distraction. I have allowed her to go to his house for dinner and spend time with him on a wkend day etc. Boys Mum works at the school. She offered my DD to spend the night, DD text me to ask. I replied “No”. (Hell fucking No! in my head). DD told me they all had a good laugh and that bf’s Mum is fine with her 13 yr old having bf and sleep overs 😳 Not for me ☝️Apparently she’s very cool and laidback 😶 Since this DD’s been lying and going to and staying over at bf’s when he’s at his dads on wkends. I have tried confiscating her phone and grounding but she goes behind my back. I try to enforce my boundaries but we are just butting heads. She went to his everyday after school last wk, wanted to go Friday after school, Saturday to a “friends party” and Mothering Sunday she would have been awol too. She stayed out Friday night 😡 I told her not to bother coming back, raging. She came to collect clothes last night and has gone to stay with a friend. I have a 5 yr old DD also and believe it or not they fight too when together. Single Mum and struggling to cope with my mental health. I just don’t know what to do. Any advice or experience?