Am I right to be annoyed?

I was really looking forward to valentines day... I know it's commercial and its just one day of the year, but I'm a hopeless romantic and just love to do something on the day.

I was hoping to get dolled up and look fabulous but the guy I've been seeing has invited his mum out for dinner too.

She's been visiting for 2 months and every weekend we're out with her day and night. Literally till midnight. Most weekends we get to his for 1am and then he thinks I wanna get frisky gone 3am after he's watched whatever he wants on TV...
Anyway, indont mind seeing her etc but on valentines day?
When we get minimal time together as it is...
I was kinda about his suggestion but I genuinely thought he would realise its not really for me...
I wanted to dress sexy and wear a short dress out, but because his mum is coming, I'm more inclined to cover up as she always gives me the look when I'm not covered up and don't cover my arms and legs.

Don't really know how it will go but it's made me feel a tad frustrated tbh.
There's no bigger mood kill then mum coming along to the romantic meal out.
Do I cover up or wear something sexy.
His mum is 70, I'm 29
Am I right to be annoyed?
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