Probably BU, but feeling quite irritated about this.
DD(5) started a dance class in September. It's been going well, everyone very nice, she enjoys herself. The niece of the main dance teacher often comes along to the class to help out. She takes the children into the foyer, beside the main hall, one on one,to help them practice any steps they are struggling with. I noticed that she seemed quite standoffish- I tried to speak to her a few times (just chit chat) but she more or less glared & blanked me. I wasn't particularly offended at this, as I know a lot of people tend to be shy & feel awkward about talking to people.
However, today DH was out early from work, and decided to come and meet us at dance class, as he hasn't seen DD at it yet. When DH got into the hall, I noticed he looked a bit red faced thought nothing of it
As we were leaving, I stayed behind to ask the dance teacher something and rummage in my bag. I could hear the niece laughing (don't think I've ever seen her crack a smile tbh) and as I got round the corner, I saw that she was talking to DH, who was holding DD's hand and trying to open the main doors. She then sort of threw herself against the doors in front of DH, very dramatically, arms outspread, and went 'oh no, you're not allowed out, you're not going anywhere" rattling the door knob as she did it
DH just looked pretty awkward and went 'right ok, see you then' to which she said 'oooh yes, YOU should bring DD more often' all in that jokey/flirty tone people do. This all in front of me and DD.
So we got out, and I went 'oh, do you know her then?' and DH (still very awkward) explained that she was a friend of his cousin, though he hadn't seen her in years. I laughed it off and said 'yeah, the way she was getting on I though she must be an old girlfriend' and DH said there'd been nothing like that, though when he'd initially came in to the hall, she'd been in the foyer, and said something like 'well I never thought I'd see that gorgeous face again'- which is why he'd turned a bit red (DH can be quite shy with women/being complimented)
Tbh, I wouldn't have cared if she was an old girlfriend- I'm not the paranoid type. However, now I've had time to think about it, I'm actually quite annoyed. She is technically an employee of the dance school, and I feel that her behaviour (given how unfriendly she is usually) was pretty over the top and unnecessary, particularly in front of my five year old DD. DH found it quite embarrassing, and I now feel quite uncomfortable going back. Oh, I checked DH cousin's FB, and sure enough, this woman is on it. Cousin has pics of me, DD and DH, so is bound to have known who I am beforehand. This leads me to think she has a bit of a crush on DH and is subsequently being unfriendly to me 
just feel a bit 
about it all, and don;t want it to impact on DD dancing