Has your intuition ever been wrong about getting cheated on? Is this signs he’s sleeping with someone else?

I’m with this guy it’s been 6 months I won’t go into too much detail about him. The past 3 weeks I’ve noticed every weekend, he disappears. I’ll call him, his phones off or does not go through. We have plans he ghosts me and his phone won't go through and he’ll act as if nothing happened. I’m so used to it now I’m actually numb I don’t even cry much anymore. Anyway, i have such a strong gut feeling he’s sleeping with this woman, SUCH a strong gut feeling, it causes me restlessness and I can’t sleep because of it and every-time I see her my gut just rings alarm bells. I haven’t just chosen a random woman it’s someone who he follows on every social media platform, they like each others photos, he likes all her old ones tries to get her attention and the nights she posts about going to meet her d*k appointment, he does not contact me. They also go to the same clubs and events on Saturdays. He will ring me in the evening as if nothings happened. Are these signs he’s cheating? I had a ex and he would disappear and the whole time I was just his second girlfriend. Do u find you’re intuition to be right?

Updates
11 mo
I’m trying to stay strong and convience myself it’s all in my head and that I’m wrong but when I do that it dosent feel right. He’s always said he likes older women she’s 30 I’m 21 and he’s 26 so that gets to me.
Updates
11 mo
EVERYTIME I mention her he hangs up the phone and calls me childish and immature and threatens to break up with me and turns horrible.
Has your intuition ever been wrong about getting cheated on? Is this signs he’s sleeping with someone else?
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