<human>: Can you give me a shortened version of the text?

This is a x-post from TIFU, because I need help.

So, there's this girl in my life, we'll call her Bethany. We've been "talking" since Janurary, we dated briefly, and since July, have been in a sort of limbo. We were pretty flirty, occasionally would sleep together, but nothing definite. When I tried to pursue something more, I'd often get pushed back, and Bethany would say "I'm not ready for a relationship". This cycle of closeness and distance has been going on for a while.
Well, one of these times, I created a tinder to try and distract myself from Bethany. I messed around on it for a little while, but didn't really talk to anyone, and lost interest in it.

Fast forward to this week. Bethany and I have been doing really well. I bought her roses, invited her to a concert of mine, etc. (in hindsight, I should have realized that she was really starting to like me again). I hadn't used tinder in a while. However, one of my good friends Sarah is in the profile picture for tinder, and so after talking about it, I showed Sarah the picture of us in tinder. Well, my dumb ass didn't close the app. While driving to get dinner together, I asked Bethany to look on the GPS on my phone to see where we were going. However, she started snooping, and found the open tinder.

Now, Bethany hates me, going so far as to say "I'm fucking retarded for even beginning to fall into relationship feelings with you." I've tried to explain that she's the one I want to date, and that tinder meant nothing to me, but she won't believe me. I know I fucked up, but I don't know how to fix this.
<bot>: FWB (former girlfriend) wanted to be more, I didn't know, she found my inactive tinder, hates my guts.