UPDATE: My (29F) husband's (29M) new coworker (26F) has a crush on him, he isn't interested in her, but doesn't see anything wrong with hanging out with her at or outside of work.

Here's my original post.
https://www.reddit.com/r/relationshi...f_has_a_crush/
tl/dr: My husband thought having a platonic relationship with a coworker who wanted a romantic relationship was okay. He announced I was pregnant at work, she got angry, and he realized she was so upset because it wasn't just a friendship to her. We discussed why I was so upset and felt disrespected about their friendship, and he said he gets it now, apologized to me, and now we're better and taking a kid free trip to Las Vegas later this month.
I tried talking to him about the relationship with Maria soon after I posted that. I told him I'm extremely uncomfortable with him getting closer to her, and he said I don't need to worry, he's used to getting a lot of attention from women so he's ignoring it. So I said that wasn't good enough for me. He was quiet for a second but handed me his phone and said I could look through all 4 months of texts, and they were all work related except for 2 about lunch, which I knew about.
A couple days ago, he got off of work early because I'm pregnant, and he wanted to come to my prenatal visit. He walked in the house, and as soon as he saw me, he started telling me what happened at work that day.
He hadn't told everyone at work I was pregnant yet, so I left it up to him to decide when to tell everyone else. He announced to everyone in the hangar (he's in the Marines and does aircraft maintenance) that we were expecting our 4th child, so that's why he was going to be getting off early to go to a prenatal visit. Everyone congratulated him or made jokes- except for Maria. She was excited to see him and was talking his ear off while they were fixing something, but as soon as she heard we were expecting, she got angry, got an attitude when he asked her to grab a part for him, and spent the rest of the day avoiding him. Their other coworkers noticed this too.
He said he was honestly confused at first, and he thought "Why is she mad? It's not like we're together, I'm married and she knows this." But then it hit him that this wasn't just a friendship to her, and that even though he didn't intend to, he had crossed a line. He kept going back over the past 4 months in his head, wondering what he said and did to let this happen, because he felt like he had treated her like his other friends. And said he knew there were things he shouldn't talk about with her- he never talked about our marital problems-, because he knew confiding in someone like that could lead to problems, and he never touched her, not even a handshake or hug, because he didn't want to lead her on.
Then I showed him the comments on my post. We discussed boundaries and comment about how relationships are based on the intent of both parties- that a friendship is when two people agree to be platonic, but with Maria, he may think they're friend's, but obviously Maria wants more. So if only one person thinks its a friendship, then it's NOT a friendship. He agreed with that, said it made sense, and he's sorry he didn't think of that on his own. He also said he sees how it could appear to be the beginnings of an emotional affair, but promised it wasn't one, he was just an idiot who thought it was possible to be friends with someone who wanted a romantic relationship if he just ignored that part.
I told him I just felt extremely disrespected, especially since he had invited her to our house for a barbecue we are having, and our children and friends/coworkers will be there. He just kept apologizing, and said at the time he didn't fully understand why I was upset because she was just a friend to him, but now he gets it, and she's not invited anymore.
Then he said should have known a friendship can't work if only one person thinks they're friends, apologized for not listening to me and for naively thinking he had everything under control, promised it wouldn't happened again, and said he loved me. We had to leave for my appointment then, but decided in the car that sometime in the next month, we're taking a kid free trip somewhere.
He texted Maria that night that he wanted to keep their relationship professional, which she didn't take so well, so work for him has been interesting for the past couple days, but he said as long as our marriage is strong and I'm happy, he's okay with that. He's planned a date night for this weekend, and his mom's flying in from Norway this month to watch our 3 girls while we go to Las Vegas. So everything is good now. :)


Source.