Dealing with one of my partners colleagues flirting with him

[Fernlea]

Last Christmas at a there was a female colleague openly flirting with my partner right in front of me. She made an effort to sit next to him and at every opportunity at the bowling alley tried to make out they were going for the same ball to touch his hands and stare at him, you can tell when someone is flirty and keen on someone. When we left she made a point of saying you won't see me until then as I am on leave and hugged for a little too long. . I said how I found it disconcerting her openly flirting and it made me feel uncomfortable he said oh she says I'm good for an old 'un (she's 18 years younger) and she is very intelligent (which I know he finds attractive) and I respect her. since then when working from home he doesn't always pick up her calls or doesn't always put her on loudspeaker but if he does makes a point of saying I am there
He played one of her answerphone messages and she said I am waiting like a puppy dog for you to call me back, I said what's that about he said I have no idea and appeared slightly miffed.
Anyway she is leaving and she invited him for a goodbye cuppa in the office, he said he'd take me along too which is great but I feel awkward and wonder how to play this if she is clearly going to be the same and will want to hug him etc...WWYD?
They have promised to keep in touch and he will send her his new phone number if he changes phones...

@VeryOdd

NC for this. Many years ago at uni, I had a very similar experience. My then-boyfriend and I went out to the smoking area one night. I very briefly popped off to the ladies and when I came back there was a girl from his course talking to him. He introduced me as his girlfriend and put his arm around me as normal.

Only this other girl then proceeded to perform the most bizarre and brazen act of flirting that I've ever seen. It totally knocked me off balance, so much so that I didn't quite know how to react. It was so obvious, blatant, and over the top that in my head, I just thought...this can't possibly be for real... I would have thought she was just drunk, but for the fact that she completely ignored my existence. I would try and join in their conversation and she'd completely cut me off. My boyfriend was the slowest smoker in the world but even he was trying to pick up the pace to get us out of there. She then said to him, we're getting a taxi into town come with us, but that I couldn't come as there weren't enough seats hahaha. She then rather expectantly held out her hand for him to take! He gave her a rather resounding no. After she left he just turned to me with a face of 'wtf was up with her?'
After a couple of weeks of her attempting to reach out to him on Facebook asking him out on study dates, coffee dates, and later on just plain old date dates, she gave up and moved on.

It was with a weird sense of "Ah...well that makes sense I suppose," when that girl many years later started featuring rather heavily in the papers as Britain's most famous OW.

Tbh if I were you, I'd say something to the colleague so that she realises just how odd her behaviour is. It doesn't have to be snide or too overt. Just one very pointed comment that makes her realise she's being a fool. She will put some men off but others will love it. I'd be a little worried that your partner is not more perturbed by it.

Rebecca Loos??

@JudyGemstone that was my guess too

..... and me

I got up to the part where you've only been together 18 months! You need to make 2021 the year when you work on yourself and stop fucking around with dickheads who revel in bringing you down.

Find something, anything. Join a gym or a knitting circle, start running, gardening, cooking, evening classes...anything.

You need to find something you love and that gives you confidence and takes you out of yourself and then you'll stop wasting your precious time on men that don't deserve it.