Every time in my relationships, it feels perfect for the initial 3-4 weeks, but later on, I start to feel irritated with the person. His every action irritates me. What should I do? Is there any solution to this? Am I having some psychotic disorder?

Seeking sunlight without having the sun?? Where is that so-called “LOVE” ?? Without that genuine love, it would be natural to feel the way you are feeling. Don't worry you are normal.