Just because he has tinder doesn’t mean he is actually cheating on you.

Shouldn't it be the opposite? If he was the first match, doesn't that mean The Algorithm says you are perfect together? Who are you to think you're smarter than The Algorithm?

I dealt with that crap from my ex husband as well! you're so much better off, but I'm sorry youre dealing with this.

That reminds me of an old song - “Escape” (the Pina Colada song). Depends on the circumstances, were you looking to catch your boyfriend being unfaithful or were you looking for new options yourself? If you were looking for new dating options and happened to get paired with your (now Ex) boyfriend then it’s the song I mentioned. If you were purely looking to catch your (now Ex) boyfriend being unfaithful, then maybe you found what you were looking for or maybe he was looking to see if his options were more interesting than being with you? Either way it’s a sign that there are relationship troubles. In a way I sympathize with both of you. I hope your next relationship is a more fulfilling one.