What’s the plan?

My gf and I broke up almost a month ago, and I honestly don’t know what to do with my thoughts.

We dated for 5 1/2 months, we swim together in high school for a year approaching our next year in about a month. We broke up because I overthink a lot which she says wasn’t the reason, but that we don’t have really anything in common besides a couple songs (I don’t like swimming, my parents are the coaches 😭). She mentioned we just wouldn’t work out and it just has stuck to me. Ever since that day, she took off her highlight of me and I decided to a couple days ago myself of her, she’s rarely texted me as she started texting less and less as the months went by as I knew her, and beyond all that, she is hanging out with her first ex (She had a 2 to almost 3 year relationship but considers him as a boy best friend now) a lot more often. I don’t want to leave her in the dust as it would be awkward swimming another 4 months with her while unfollowing her, but I also don’t like seeing the stuff she likes on Instagram popping up on my feed.

Overall, should I control my emotions and just let time pass more or should I listen to myself now and unfollow? I have so many photos of her too that I don’t want to delete, but I started to a bit yesterday…