Name changed for this
I can't sleep- me and dh are sitting down stairs wondering what the hell to do
On Sunday dd was moody and tearful. Eventually she told me that a boy she 'fancied' at school had sent her some dodgy texts and a photo. Prior to this she had told me she liked him and had sent him a friends request on facebook. This developed into them texting each other loads of times every day but nothing else- not seeing each other outside school etc
I looked at her phone with her beside me- lots of flirty banter from her and stuff from him that started to become sexual and the last one was a photo of him naked holding his erect penis 
He is 15
I was horrified and we had a long chat about boundaries, respect, relationships etc etc. She agreed that it had gone too far and she felt awkward. She deleted him from her phone, facebook etc
fast forward to today- she asked if she could stop back for art club- nothing new there and dh would pick her up later on. However she later asked if she could stop back until 6 as art club was extended . Agreed on 5
dh went to collect her and when they returned I could see he was bothered by something. Dd looked dishevelled- hair down, shoes covered in mud bra straps. He told me when she was out of the room that he didn't believe she had been to art club as her demeanour was different. I asked her if she had been to art club and she was adamant - looking me right in the eye...long, story about who was there, what she had done blah blah
We were suspicious so when she went to bed I had another look at her phone and saw all the new texts - her arranging to meet him at end of school field, all giggly flirty and sexual. They had obviously had a big snogging session with lots of groping- her touching his penis etc. Apparantly she has a love bite. Lots of jokes later from her when home about fooling us and arranging further meetings . It was only the fact that she was on her period that stopped them having sex 
I feel bereft, sad and angry all at once. Dh angry and wanted to take a hammer to her phone. dd doesn't yet know we know
I don't know what to do- my stomach is in knots and I can't stop going to the loo as i am shiteing myself inside out
It only seems five minutes ago that she was oohing over her rabbit handbag...I am bloody distraught
What do we do?????