I guess everyone is going to jump on the female colleague thing, so here’s come context if it’s helpful..
In my rational mind, I don’t think anything is going on, but even if nothing is going on, I still get really upset that they spend so much one on one time together, and are good friends, when he can’t even be bothered to text or call me while he’s away, even to check on the kids!! While they are away they obviously stay in the same hotel and eat together. Having traveled for work myself in the past (another reason that job felt incomparable with having 3 DCs) I know that’s normal, but I do get upset, I suppose because I miss him and wish we could spend time together like that too. When I try and say it upsets me, he just gets very defensive and refuses to even try and understand why I’d be annoyed about it, and that he’s working hard and why am I being so unsupportive.
So although I’m rational about this most of the time, on those lonely nights when he’s away with her, my mind does wonder if something could be going on… she’s quite a lot younger, no kids but has a boyfriend. One time he was travelling (just the two of them), I called to say night, he hadn’t heard from him all day, missed him and wanted to hear from him (I was also lonely and hardly spoken to an adult all day!), it was about 10.30pm and they were in a bar!! I was really upset, and he was cross I was upset, and said I’m crazy. My hormones were crazy at the time and I was crying down the phone, I was around 3 months postpartum, but there was no sympathy. He told me after they “only had one shot” and a few drinks and they’d been talking about travel and travel plans, a lovely conversation, one that he doesn’t have with me! So so frustrating why he doesn’t get this is annoying - what do you think?
Also, I do accept their travel in general. She’s his employee at the end of the day, and that’s her job, so there’s nothing I can do about it.