How to know if he’s lying to not hurt your feelings

How do you know your husband has a problem with your vaginal tightness or muscle strength in your vagina?

I have talked about this with my husband but he reassures me. Except I can’t feel him very well anymore. I think he’s lying? Has anyone gone through this? How do you know if he’s lying about it to not hurt your feelings?

I just want the truth so I can stop worrying and try to fix it. I know I just need to fix it for my own pleasure so I guess I’ll just work on it without knowing how my husband feels about it. There’s just been a few signs and I’m not sure if I’m overthinking.