DH has a female friend he has known for a fairly long time (before I met him - we are married 5+ years with 2 young DC). I would say they are fairly good friends, but don't usually see each other much (meet maybe a couple of times a year, text occasionally). It's normally just the two of them, I don't know her particularly well.
Our DC now go to the same school (she is married with 2DC) and since our eldest started in September, suddenly DH is seeing and messaging her more, she has offered to babysit for us, and they've taken the DC for a playdate together recently and the DC took a real shine to each other. She has now asked about having our DC over for tea some time soon.
Without any other background this would seem fine, friendly, whatever. However I can't help but feel really uncomfortable about it. I don't want her around my DH, and I don't want her cosying up to my DC either. But I have no say in who he is friends with, we trust each other, and I don't want to kick up a fuss about something that could be entirely my own insecurity. So I don't know whether to say anything or not.
Background...
On our wedding day, 2 of my friends told me this woman was sobbing her eyes out blind drunk at the night so and told a few people she couldn't believe DH was now married (she was with her now husband at the time). She posed with DH for photos while I was off talking to guests, so there are "coupley" photos of them within our wedding photos. A few people did comment how weird this was. Over the years she has had issues with her DP and would tend to call on my DH if she needed a chat, and also DIY type jobs doing, which he was always happy to help with. I always felt a bit like she only contacted him when she wanted something and in all honesty I didn't really like her or get a good vibe from her, and she didn't seem particularly interested in getting to know me either.
I've never really thought much of any of it as they barely saw each other. However, in the past year, a neighbour saw DH and his friend together the last time they met up and basically told me to watch my back, as this friend was the woman her (now ex) husband had cheated on her with.
AIBU to be wary of a sudden increase in them spending time together when they wouldn't normally, AIBU to feel like she's working her way in, and should I tell DH how I feel or am I just going to cause some kind of self fulfilling prophecy by making DH feel untrusted if I tell him I'm uncomfortable with it? I can't help how I feel but I normally tell him everything. I trust him but I also feel like I want to protect my family unit and this woman feels threatening to me naturally I want her to just go away 🙈
I also know full well that DH is perfectly entitled to have a female friend, and I don't want to come between him and a friend just because I feel insecure about it. I'm not sure what telling him would achieve other than maybe gain some reassurance that there's nothing more to it.
Wwyd?