Sure! Here’s a revised version of your text in proper English:
"Recently, I had a conversation with a gentleman who mentioned that he saw my ex-boyfriend with another girl. Later that day, when the guy came to the stadium to pick me up, I mentioned what his friend had told me. He became angry and started questioning why I was trusting others instead of him, insisting that he should be the one to provide me with the truth. It felt like I was the one who needed to apologize to him."