Well, invega is a legitimate form of medication for some patients with psychosis. It has helped my brother in the past, for example.
Fluoride does not "destroy" your pineal gland, based on current scientific literature. If your pineal gland is destroyed you will have brain damage, possibly death.
Invega is a dopamine antagonist, which is the property that causes most of its side effects. The problem comes with people being forced to take it without having the side effects explained to them. Otherwise, I'm sure they would have fewer lawsuits.
The sex drive is killed mostly due to its capacity to increase prolactin.
Yes, it's very bad. What's bad is that he is not communicating well with you. Unless something serious has happened on his end preventing him from messaging you, then I'm certain you deserve someone better. If he can't be there for you during your darkest time, then that's a learning experience.
But don't overthink it. He could just be busy.