AIBU to think my husband's story about washing does not add up

[Ruby90]

DH and I have been together for 6 years and have two young kids. I caught him texting an old flame two years ago, was flirty and inappropriate. I chose to stay with him and we tried to move forward. Since then I’ve been insecure about it all and have accused him over little things. Recently he’s been really snappy with me, out of the blue. He’s been working lots and doing lates, I haven’t been suspicious at all because he works outdoors and always comes home filthy muddy and I hear his conversations with his work colleagues about their day. Last night was no different, he had a night job his colleague met him at our house - they van shared and went off to the job. I knew he’d be home really late, like 12am so I went to sleep. When I woke up, he was home and his filthy clothes on the floor but he was clean-ish. He told me he had a bath , but he’s normally messy in the bathroom - the bathroom hadnt been touched by him. There’s normally splashes on dirty water or muddy hand prints. He even said he had cleaned it up with a flannel but there was no flannel in the bathroom. When I confronted him, he got immediately angry and back tracked saying he didn’t have a bath, he had a quick wash in the sink.
However the bar of soap hasn’t been touched and the sink was spotless as I left it before bed.
I believe he’s showered at another women’s place or even a sex workers?
AIBU?

I would leave him purely for the way he leaves the bathroom

filthy pig

I trusted what I knew. Friends/acquaintances were saying little things/hints etc (smartly dressed when only jeans and tops/shirts and casual trousers). I ignored them, incorrectly. Trust your gut and do some digging.

Trust your intuition 💖

He said he’s coming back tomorrow night which is when I am going to try check his phone.

He’s now saying he’ll get his work colleague to send time-stamped photos of the job to prove what time he was working really late. He’s saying him and his work colleague got back to our house at 2am. The work colleague drove home and he came inside, I woke at 6am so he’s saying how could he have cheated in that 4 hour window. We don’t have any ring door camera so there’s no proof that’s right. Like a PP said he could have finished early, I went to bed around 10pm so I wouldn’t have known what was going on outside.
I appreciate people saying trust your gut, I have to know.

Oh OP this really isn’t any way to live, and I say that as someone who’s been exactly where you are. You might be right about your suspicions or you might not be. But the bigger issue is how this is making you feel day to day. Living with that level of anxiety and vigilance just wears you down over time.

I recently separated from my cheating liar, so I don’t say this lightly. It hasn’t been easy but what I do have now is a sense of peace that I’d lost. I’m no longer exhausted from constantly checking and worrying about what might be happening behind my back. You deserve to feel secure and settled in your marriage, not like you have to investigate it.

He’s now saying he’ll get his work colleague to send time-stamped photos of the job to prove what time he was working really late.

He's bluffing. Call him out. Say, yes that would be great, ask him to send them over.

People always threaten extremes when they're lying.

Christ he probably couldn't be bothered to wash and lied so you didn’t think he was a soap dodger!