AIBU and over sensitive or is this just a bit off?

[Hurryupandcome]

Helped my boyfriend of 6 months move flat today. He's lived there for the past 4 years and he mentioned afterwards he felt quite sad about leaving and then said he was thinking of creating a Facebook post thanking his current and past flatmates for the great times he's had there and then proceeds to list them....and within the names he mentions a girl who he slept with on and off for 3 years. They were never in a relationship but enjoyed great sex. When i said 'oh but she was never your flatmate' he said yeh but we spent a lot of time in my room. I said that I thought that was a bit weird to thank her amongst them and he said yeh you're right.

AIBU to feel quite wtf about this or should I just get over it?

If someone I used to casually sleep with made a fb post publically thanking me for the memories I'd cringe myself to death and then delete him. Inevitably others will comment saying "huh? X was never your flat mate?" And then he'll reply as he did to you "no, but we spent a lot of time IN MY ROOM . It's sooo creepy.

He's 31? When I read your post I thought he would be about a decade younger. Well as you say, he has an immature mindset. That will probably end up annoying you in a variety of ways.

Exactly what @WisdomOfCrowds said!

So bloody weird. I'd think he wanted her attention again otherwise just no!!
Id be mortified if someone I used to sleep with tagged me in something like that on Facebook!!

He sounds immature and too over familiar on social media.

Weirdly he doesn't post much on social media ever. And doubt he'll post anything about this after our conversation. He's said sorry a few times so guess there's not much I can do apart from move on and see I suppose.

I think he was trying you get a reaction out of you, trying to test you to see how you’d react, he sounds insecure and immature.

It’s not a dealbreaker by any means OP, but I’d be on the alert for other signs of... whatever this is... (immaturity? Thoughtlessness? Negging you? Keeping his options open? I don’t even know, but it’s nothing good!).

I'd end it with anyone who felt the need to post attention grabbing shite on social media.