Cheater. Liar?

So my partner had a std check when we weren’t talking i suspect he cheated on me as that’s the only reason for taking a test.

He’s been out of work during lockdown and recently got a job working out of town, if I am honest my insecurities got to me and I was home alone slot and down I make comments such as ‘I feel single’ etc.

I confronted him and he says I got into his head and put it back on my stating he suspected I was cheating because of the comments I was

Making … no rude comments please just want advise