Did I give him & std or did he give me 1?

Okay so the 25th I had sex w/ an old fling and it was whatever. A couple days later he tells me to go get tested bc I gave him something from the last guy I had sex w/. before him was a month ago and he got tested already and came back clean. 🙆🏾‍♀️ He says that I was his “last” (even tho he jus got out of a cheatin ass relationship) he doesn’t know ik that but… my cat is fine no itching nothing but he swears he’s burning up down there

*side note - will be getting tested bc ion play that*