To participate in workplace flirtation?

[LC424]

Happily married with lovely DH but lacking a little excitement (small kids, work, chores etc)

New guy at work started ~6 months ago. He's about my age, married himself, not bad looking but also not a head turner. We bonded straight away as similar sense of humour.
As time has gone on we talk more and more, and I think I fancy him
He gives me cheeky looks and winks and I think he might fancy me too.

I know nothing would ever happen but AIBU to participate in this flirting now I have some feelings for him? It feels different now to before when I only thought of him as a friend. I don't want him to ask why I've stopped talking to him!!
I am moving departments soon so might not have to see him for much longer anyway.

How is it a happy and secure marriage when op States she has feelings for him and thinks of him more than a friend. OP states that's a couple of weeks ago she thought of him just as a friend so she obviously thinks of him more than just that.
If she didn't have feelings for him that's a completely different story

I'm so confused at where the line is.

If I find someone good looking, should I not be talking to them either?

If you find someone actively attractive to the extent it’s a crush then you should be particularly cautious about how you talk to them.

You aren’t being cautious, you are feeding your emotions (and his given you think he feels the same way.)

You say you don't want anything to happen but clearly you do, you want individual attention, you want excitement, you want to feel special..

That’s a dangerous set of behaviours to engage in if you value your marriage.

It’s also a dangerous set of signals to send to him if you want to remain just friends. If he makes a drunken pass at you on a night out what will that do to the friendship?

Crack on you daft bag

There you go...the green light you were looking for

What AnyFucker said.

You're going to do whatever the heck you want to anyway other people be damned. 🤨

Pointless thread is pointless.

Hear hear @AnyFucker .

I have the perfect family unit, DH is really great. Maybe we just need to do more stuff together. Hard when you have young kids!
I'd honestly not do anything to jeopardise it!
DH knows about how good friends work colleague and I are - think I will stop having breaks at the same time as him.
Cold light of day and all your posts have woken me up a bit.
Thanks all!