Hear me out before the instant judgement 

Me (23) and my gf(20) have been together 10 months and love each other a lot, but lately we’ve been arguing a lot over minor stuff, the other times she admitted she was at fault and apologised. 

This time however I am seeking reddits judgement. 

We were having a normal chill conversation and just talking over text, she tells me she made a playlist that makes her think of me, I replied “u stalker” and then sent “what songs init doe?” And she replied saying I upset her and she’s not sharing now. 

I said “wait did I actually upset you?” And I said “I’m sorry if I did, I didn’t think it was a big deal, I was just joking, you don’t really think I’m gonna actually accuse my gf of being a stalker lol”

She said I don’t mean my apology and “it’s fine”

And then guilt tripped me a bit, which I bought up, and she said “I’m not trying to guilt trip you in any way, I’m sorry that your joke which is really funny to you made me feel crap when I was trying to express myself”

...I really didn’t intend any harm and we talk to each other like that loads and joke together, but for some reason she’s changed about it.

And now I’m getting paragraphs of text about it and I just really don’t understand how something like that can get blown up so much? 