Awkward Embarrassing Ex encounter 😩 pls help 😫🤦🏻‍♀️🤦🏻‍♀️🤦🏻‍♀️

So I’m in college (Highschool) (I live in the UK btw) and I was on the bus after school and it was SO BUSY I could hardly even move. And then guess who stands next to me. My ex. And it was so awkward we were like standing so close. The bus driver was driving very roughly and then suddenly stopped the bus and I practically fell on my ex!! It was so awkward and embarrassing😫🤦🏻‍♀️ and then I said sorry and he kinda laughed it off but I was still standing next to him and it was so awkward and I felt so embarrassed. Then I walk home from my bus stop and see I have sweat marks!! Uhhh j can’t stop thinking about it it was so awkward 😫😭 Help pls

Edit: I know this doesn’t seem that much of a big deal but uh we didn’t exactly have a great breakup. He cheated on me with my best friend and once they broke up, he tried coming back to me so yeah sorry it was awkward 😐