Do ex’s devalue you?

I know this might sound silly but I feel like I could be looking at it wrong but the only 3 relationships I’ve had the first 2 cheated on me. The 3rd was the best I ever had and we had a mutual breakup and he’s a lovely guy but he said as an ex he can’t pull anyone or get dates and it kind of gave me a weird mindset that I’m not worthy my ex’s have either cheated or in a sense people don’t want to date them? So what does that say about me, doesn’t help that I also have insecurities about myself. But I can’t see why because he’s an amazing guy. I just feel like no one really wants me and the people who do can’t get anyone else so am I low value?