Is this flirty?

[Gossipqueen14]

Some background...rocky time for me and h.

He has a group chat with his work which is girls and guys and in their late twenties to late 30s.

Moment of weakness and I looked at his phone and his work group chat.

H had Sent a 'meme' of a woman in a bikini doing 'manly jobs in a ski resort' and it's had a 'funny joke attached'

Another guy said it that a pic of X on her holiday...and the girl X wb and said 'my husbands name that was just for your private vieiwing lol' H wb with a laughing face then changed the subject.

Is this just banter or flirty? So embarrassed but so confused ATM I am questioning everything and don't want to pull him on it if it does seem innocent enough

This wouldn't bother me, I don't think there's anything wrong with a bit of flirting anyway. Is this the only thing you're worried about?

So embarrassed but so confused ATM I am questioning everything

On it's own no, it's not a big deal. But the fact that you're confused and questioning everything means your spidey senses are tingling. Which often happens for a very good reason. Why are you confused?

He said the other week he wasn't happy didn't know if he loved me then has done a full circle that he is happy does love me etc...it's made me worry and become insecure in our marriage. So I have been on high alert 😢

Not flirty. Massively misogynistic though and hugely out of line for colleagues, they clearly have no boundaries.
Him saying he doesn't know if he loves you anymore is a huge sign he's window shopping though. Quite frankly I'd be asking him to leave for a bit so you could decide whether you can remain committed to someone who doesn't "know".