Does my girlfriend’s mum suspect we’re dating, or am I overthinking it?

My girlfriend (20F) and I (20F) have been together for over two years, but her parents still know me as her close friend. Her mum knows she's queer, just not that we're dating.

Here's what's happened:

In early 2025, my girlfriend told me, “My mum really loves you.”
At graduation, her mum seemed particularly interested in me.
She used to regularly heart-react to my Facebook posts and stories.
After I posted a rainbow-heart story, I noticed she wasn't reacting as much anymore.
Last year she wished me happy birthday publicly, but this year she passed her wishes through my girlfriend and wrote “my dear friend” in my birthday card.
My girlfriend and I are practically inseparable. We've met up three times in the past two weeks.
Recently, when her mum realised we'd met up again, she gave an awkward little giggle before hanging up the phone.
Even my family thinks she might have suspected something for a while!
To be fair, she's also been kind to me and recently thanked my mum for looking after her daughter.

So, what's your guess? Does she suspect we're actually girlfriends, or am I reading too much into it?

Does my girlfriend’s mum suspect we’re dating, or am I overthinking it?
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