To be annoyed at a 17 year old seeking attention from DH?

[ILoveHumanity]

So there is a friends daughter who is 17, I was close to her and used to bring her for sleep overs at my house. I met someone when she was 15 and obviously He liked her as his little sis as did I. We are both in our twenties.

My DH is a respectable man. After we got married sim started to stir trouble for me and 17 yo girl. She started teasing and saying to DH how 17 yo fancies him and how she is gorgeous and how if she was older he should’ve got with her instead. Obviously DH found her weird.

Said sil started hanging around 17 yo girl And became best friends (sil is 20). After that 17 yo changed her attitude and started behaving competitively... seeking attending from Dh.

I felt compelled to recue my relationship with her so I told her that sil is stirring trouble and trying to get her brother to fancy that girl - gullible me thinking that her sisterly loyalty will make her not betray my trust. After that conversation her competitive attitude peaked and became so obviously flirtatious.

He noticed a few times that she would go out of her way to appear attractive and catch his eye and stare at him .. he informed me. I didn’t make anything of it at first, and continued to invite her.

But few times I managed to see infront of me that she was waiting for moments when I’m absent to go and seek attention from DH in a provocative way. I sometimes saw from a distance. Dh was always uncomfortable.

It seems like sil filled her head with crap.

Both are teenagers and I’m almost 30. So I’m ashamed that I would be picking on such age group.

I started distancing myself from girl... I think she is pissed off with me .

AIBU or am I just handling this in a childish way?

I would just block her - couldn't be bothered with this level of tedious drama.

I would also keep my distance from SIL who sounds rather odd.

So weird. Tell her yourself she is making everyone uncomfortable.

This isn’t just a silly crush as otherwise you might notice her being more giggly and flushed around him. She is activity trying to engage with him with her actions to entice him in.

Not all girls are innocently taken in my older men some do and will go in for the kill so to speak. Maybe lay it on the line to him, if you keep being around her and alone for even a second she could quite easily say something has happened that hasn’t if he keeps ignoring her and she feels betrayed that her love is rejecting her.

It doesn't have to be as extreme as false accusations of sexual assault. Surly everyone knows the stereotype of the teenage boy bragging about girls they 'pull' (think Inbetweeners) don't think for a a second that girls don't do it too. If she made up a tale of a kiss, imagine how that would have an impact on your relationship, even a slight glimmer of doubt can do a lot of damage. How would dh feel if other adults believed it and judged him? The only thing that makes sense to me is to keep her away. And it is massively disloyal and she knows it. I could care less if she's a friend, friend of a friend or your bloody mother - you deserve better relationships than that!