Teen DS (just turned 15) has a close friendship with a couple of girls. They are Y11 so year above him and from what I know are quite forward when it comes to boys/relationships. DS has always kind of been a younger brother type to them but obviously he has grown up a lot over the last year and looks much older so definitely more on par with them. He is much more mature personality wise than most his friends the same age so he does tend to hang out with people the year above.
Since being allowed out with 1 person he has gone out with these girls (separately to my knowledge) and walking outside.
Today he has asked to go to a sleepover at one of their houses, both girls will be there. Easy one to say no to as lockdown rules don't allow at the moment. He has complained that we had family over yesterday (in the garden mainly but sometimes inside however they are our childcare for DS2 and we are all vaccinated and kids/parents are tested twice a week so covid risk minimal)
He is saying that I would say no anyway (I may well do, not sure yet) and is saying I am out of order as we had people over. Clearly they are not sleeping over and we know they have been adhering to rules so totally different IMO. I don't know the girls parents and I feel at 15/16 this is definitely the age where things are likely to happen at sleep overs. I have been told that the girls have been in sexual relationships already which is fine, they are 16 and its not my business, but my DS is my business.
I get that if DS wants to do anything he will, however I feel i should be checking with the girls parents and also i don't think I am unreasonable in wanting to discuss it properly with DS. He omits info, for instance he is out at his organised sports training and his phone is here, i saw his Snapchat pop up on his phone lock screen and on his chat there is also another boy who he failed to mentioned was supposed to be on this sleepover, so 16 yo boy, 2 x 16 yo girls and DS who turned 15 last month. So he's lied about who is going.
I am not entirely sure how to handle this, I dont want it to be a blanket no but it will be whilst covid restrictions are in place, but after covid, would you allow it if you spoke to the girls parents? I mean if they are going to have sex they will regardless. It may be that they are just friends but he tells us so little we have no clue.
I want him to open up more but not sure how to get him to do so, we are really lenient about stuff so I have no idea why he's so closed off. He seems to want a yes or no with no discussion at all.
He has been so easy till now so I really thought he would be mature enough to have a reasonable discussion so I am a bit stunned TBH.
Any tips most welcome, TIA! I know this is a bit jumbled but I am not sure how to explain my worries really.