Is it normal when i tell my gf "i love you", she responds "ok"

mine always seem to respond 'who are you and whatre you doin in my livin room at 3 in the mornin?'

She ALWAYS responds with ok? Or she just responded with it a few times when mad? Has she ever told you she loves you?

There's not enough details here to give advice.

Perhaps she is just tired of you saying the same thing again and again and has better things to do, no offence but you do sound pretty shallow if you have to repeat it every now and then.

She doesn't love you.

Is she staring at her cell phone when saying "ok"?

Not everyone likes saying I love you all the time.

It's possible she diesnt love you yet. How long has the relationship been going what was the atmosphere of the room the general temperament etc. There is very important information lacking here

Yikes

Ouch.

Oof

She's a tsundere!
But seriously, some people find it hard or embarrassing to respond to affection. I love my parents and sister to death and rarely ever respond properly to "I love you." It's something I need to work on.

As a young ruler once said, "That's rough buddy."

She's trying to annoy you

Red light, there.

It would be more normal if she said "I'm hungry. Let's get something to eat."

I mean it could be normal if you have a joking relationship and its just something she says every now and then

Is she angry? Does she find it difficult to be vulnerable and trust others?

In this day and age I’d say this is normal